CVE-2026-23003

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory published 2026-01-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-4621 (ENISA EUVD) · GHSA-f9vv-4vcq-qjp3 (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()

Blamed commit did not take care of VLAN encapsulations as spotted by syzbot [1].

Use skb_vlan_inet_prepare() instead of pskb_inet_may_pull().

[1] BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] BUG: KMSAN: uninit-value in IP6_ECN_decapsulate+0x7a8/0x1fa0 include/net/inet_ecn.h:321 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] IP6_ECN_decapsulate+0x7a8/0x1fa0 include/net/inet_ecn.h:321 ip6ip6_dscp_ecn_decapsulate+0x16f/0x1b0 net/ipv6/ip6_tunnel.c:729 __ip6_tnl_rcv+0xed9/0x1b50 net/ipv6/ip6_tunnel.c:860 ip6_tnl_rcv+0xc3/0x100 net/ipv6/ip6_tunnel.c:903 gre_rcv+0x1529/0x1b90 net/ipv6/ip6_gre.c:-1 ip6_protocol_deliver_rcu+0x1c89/0x2c60 net/ipv6/ip6_input.c:438 ip6_input_finish+0x1f4/0x4a0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x9c/0x330 net/ipv6/ip6_input.c:500 ip6_mc_input+0x7ca/0xc10 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x958/0x990 net/ipv6/ip6_input.c:79 NF_HOOK include/linux/netfilter.h:318 [inline] ipv6_rcv+0xf1/0x3c0 net/ipv6/ip6_input.c:311 __netif_receive_skb_one_core net/core/dev.c:6139 [inline] __netif_receive_skb+0x1df/0xac0 net/core/dev.c:6252 netif_receive_skb_internal net/core/dev.c:6338 [inline] netif_receive_skb+0x57/0x630 net/core/dev.c:6397 tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485 tun_get_user+0x5c0e/0x6c60 drivers/net/tun.c:1953 tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xbe2/0x15d0 fs/read_write.c:686 ksys_write fs/read_write.c:738 [inline] __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __x64_sys_write+0x1fb/0x4d0 fs/read_write.c:746 x64_sys_call+0x30ab/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at: slab_post_alloc_hook mm/slub.c:4960 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_node_noprof+0x9e7/0x17a0 mm/slub.c:5315 kmalloc_reserve+0x13c/0x4b0 net/core/skbuff.c:586 __alloc_skb+0x805/0x1040 net/core/skbuff.c:690 alloc_skb include/linux/skbuff.h:1383 [inline] alloc_skb_with_frags+0xc5/0xa60 net/core/skbuff.c:6712 sock_alloc_send_pskb+0xacc/0xc60 net/core/sock.c:2995 tun_alloc_skb drivers/net/tun.c:1461 [inline] tun_get_user+0x1142/0x6c60 drivers/net/tun.c:1794 tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xbe2/0x15d0 fs/read_write.c:686 ksys_write fs/read_write.c:738 [inline] __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __x64_sys_write+0x1fb/0x4d0 fs/read_write.c:746 x64_sys_call+0x30ab/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 6465 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
45th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

January 25, 2026

Last Modified

October 19, 2026

Advisory Details (8)

Auto-updated Jul 14, 2026
Patch available.
Web page

SSA-019113

https://cert-portal.siemens.com/productcert/html/ssa-019113.html
Web page

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f9c5c5b791d3850570796f9e067629474e613796
Web page

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df5ffde9669314500809bc498ae73d6d3d9519ac
Web page

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b9f915340f25cae1562f18e1eb52deafca328414
Web page

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e1c8c2a33d0a7b1f637b5d0602fe56ed10166af
Web page

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/81c734dae203757fb3c9eee6f9896386940776bd
Web page

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/64c71d60a21a9ed0a802483dcd422b5b24eb1abe
Web page

ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2f03dafea0a8096a2eb60f551218b360e5bab9a3

Vendor Advisories for CVE-2026-23003(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-10-19ubuntu
ubuntulinux-tools-realtime-hwe-24.04 (6.17.0-1018.20~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1021.21~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-fde-6.17 (6.17.0-1018.18~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1019.19~24.04.3+1) @ noble2026-10-19ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1057.57) @ jammy2026-10-19ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.176.161) @ jammy2026-10-19ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1104.108) @ jammy2026-10-19ubuntu
ubuntulinux-tools-ibm-5.15 (5.15.0.1099.95) @ jammy2026-10-19ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1099.97) @ jammy2026-10-19ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1070 (5.15.0-1070.74) @ jammy2026-10-19ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1110.95) @ jammy2026-10-19ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1057.57~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-virtual-6.8 (6.8.0-117.117) @ noble2026-10-19ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1054.57.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-116.116+fips1) @ noble2026-10-19ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1106.115~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1024.24) @ noble2026-10-19ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1054.57~22.04.1) @ jammy2026-10-19ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1030.30) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1056.62) @ noble2026-10-19ubuntu
ubuntulinux-tools-nvidia-hwe-24.04 (6.17.0-1031.31) @ noble2026-10-19ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.176.186~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1097.93) @ jammy2026-10-19ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1059.65+fips1) @ noble2026-10-19ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1105.95) @ jammy2026-10-19ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1059.65~22.04.1) @ jammy2026-10-19ubuntu
redhatkernel-0:6.12.0-211.50.1.el10_22026-09-01redhat
redhatkernel-0:5.14.0-687.42.1.el9_82026-08-26redhat
linuxKernel @ 5.10.249 (fixes >=0)—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (48 versions)
  • every version up to 5.10.249-1: fixed in 5.10.249-1
—
linux-6.16.1.106-3~deb11u1 ... 6.1.159-1~deb11u1 (14 versions)
  • every version up to 6.1.162-1~deb11u1: fixed in 6.1.162-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (46 versions)
  • every version up to 6.1.162-1: fixed in 6.1.162-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.69-1~bpo12+1 (10 versions)
  • every version up to 6.12.69-1: fixed in 6.12.69-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (97 versions)
  • every version up to 6.18.8-1: fixed in 6.18.8-1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(23)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 47× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 254 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 155 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  5. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  6. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  7. 2026-10-28 12:25 UTCOSV refresh
  8. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  10. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  11. 2026-10-25 14:42 UTCEG score recompute
  12. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  13. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  14. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  15. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  16. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-19 19:39 UTCVendor advisory
  18. 2026-10-19 19:38 UTCGHSA enrichmentGHSA-f9vv-4vcq-qjp3 · GitHub CVSS 5.5
  19. 2026-10-19 18:33 UTCEG score recompute
  20. 2026-10-19 18:33 UTCVendor advisory
  21. 2026-10-19 18:33 UTCGHSA enrichmentGHSA-f9vv-4vcq-qjp3 · GitHub CVSS 5.5
  22. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-10-18 03:55 UTCEG score recompute
  25. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
Show 74 more
  1. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  2. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-10-15 02:49 UTCVendor advisory
  4. 2026-10-15 02:49 UTCGHSA enrichmentGHSA-f9vv-4vcq-qjp3 · GitHub CVSS 5.5
  5. 2026-10-15 01:56 UTCEG score recompute
  6. 2026-10-15 01:56 UTCVendor advisory
  7. 2026-10-15 01:56 UTCGHSA enrichmentGHSA-f9vv-4vcq-qjp3 · GitHub CVSS 5.5
  8. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  9. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-10-12 16:21 UTCEG score recompute
  12. 2026-10-11 20:03 UTCEG score recompute
  13. 2026-10-11 17:16 UTCEG score recompute
  14. 2026-10-11 14:48 UTCEG score recompute
  15. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  20. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  21. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  25. 2026-09-29 15:21 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  26. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  27. 2026-09-28 01:32 UTCOSV refresh
  28. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  29. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  30. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  31. 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  32. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  33. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  34. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  35. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  36. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  37. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  38. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  39. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  40. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  41. 2026-09-08 09:22 UTCEG score recompute
  42. 2026-09-08 09:22 UTCVendor advisory
  43. 2026-09-08 09:22 UTCGHSA enrichmentGHSA-f9vv-4vcq-qjp3 · GitHub CVSS 5.5
  44. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  45. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  46. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  47. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  48. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  49. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  50. 2026-08-31 04:26 UTCOSV refresh
  51. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  52. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  53. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  54. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  55. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  56. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  57. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  58. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  59. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  60. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  61. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  62. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  63. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  64. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  65. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  66. 2026-08-14 12:20 UTCEG score recompute
  67. 2026-08-14 12:20 UTCVendor advisory
  68. 2026-08-14 12:19 UTCGHSA enrichmentGHSA-f9vv-4vcq-qjp3 · GitHub CVSS 5.5
  69. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  70. 2026-08-13 04:39 UTCEG score recompute
  71. 2026-08-13 04:39 UTCVendor advisory
  72. 2026-08-13 04:39 UTCGHSA enrichmentGHSA-f9vv-4vcq-qjp3 · GitHub CVSS 5.5
  73. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  74. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.5% · 38th percentile

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Frequently asked(5)

What is CVE-2026-23003?
CVE-2026-23003 is a medium-severity vulnerability; its CVE record was published on January 25, 2026. In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() Blamed commit did not take care of VLAN encapsulations as spotted by syzbot [1]. Use skb_vlan_inet_prepare() instead of pskb_inet_may_pull(). [1] BUG: KMSAN: uninit-value…
When was the CVE record for CVE-2026-23003 published?
The CVE record for CVE-2026-23003 was published on January 25, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 19, 2026; the record at its source may have been updated since.
Is CVE-2026-23003 actively exploited?
CVE-2026-23003 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-23003?
CVE-2026-23003 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-23003?
A fix for CVE-2026-23003 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-23003 are linked in the Vendor Advisories panel on this page.

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