CVE-2025-21796

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-02-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 4 sources updated this week

Also known asEUVD-2025-5129 (ENISA EUVD) · GHSA-hgrx-p3hg-cw72 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

nfsd: clear acl_access/acl_default after releasing them

If getting acl_default fails, acl_access and acl_default will be released simultaneously. However, acl_access will still retain a pointer pointing to the released posix_acl, which will trigger a WARNING in nfs3svc_release_getacl like this:

------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 26 PID: 3199 at lib/refcount.c:28 refcount_warn_saturate+0xb5/0x170 Modules linked in: CPU: 26 UID: 0 PID: 3199 Comm: nfsd Not tainted 6.12.0-rc6-00079-g04ae226af01f-dirty #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 RIP: 0010:refcount_warn_saturate+0xb5/0x170 Code: cc cc 0f b6 1d b3 20 a5 03 80 fb 01 0f 87 65 48 d8 00 83 e3 01 75 e4 48 c7 c7 c0 3b 9b 85 c6 05 97 20 a5 03 01 e8 fb 3e 30 ff <0f> 0b eb cd 0f b6 1d 8a3 RSP: 0018:ffffc90008637cd8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83904fde RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff88871ed36380 RBP: ffff888158beeb40 R08: 0000000000000001 R09: fffff520010c6f56 R10: ffffc90008637ab7 R11: 0000000000000001 R12: 0000000000000001 R13: ffff888140e77400 R14: ffff888140e77408 R15: ffffffff858b42c0 FS: 0000000000000000(0000) GS:ffff88871ed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562384d32158 CR3: 000000055cc6a000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? refcount_warn_saturate+0xb5/0x170 ? __warn+0xa5/0x140 ? refcount_warn_saturate+0xb5/0x170 ? report_bug+0x1b1/0x1e0 ? handle_bug+0x53/0xa0 ? exc_invalid_op+0x17/0x40 ? asm_exc_invalid_op+0x1a/0x20 ? tick_nohz_tick_stopped+0x1e/0x40 ? refcount_warn_saturate+0xb5/0x170 ? refcount_warn_saturate+0xb5/0x170 nfs3svc_release_getacl+0xc9/0xe0 svc_process_common+0x5db/0xb60 ? __pfx_svc_process_common+0x10/0x10 ? __rcu_read_unlock+0x69/0xa0 ? __pfx_nfsd_dispatch+0x10/0x10 ? svc_xprt_received+0xa1/0x120 ? xdr_init_decode+0x11d/0x190 svc_process+0x2a7/0x330 svc_handle_xprt+0x69d/0x940 svc_recv+0x180/0x2d0 nfsd+0x168/0x200 ? __pfx_nfsd+0x10/0x10 kthread+0x1a2/0x1e0 ? kthread+0xf4/0x1e0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x60 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 Kernel panic - not syncing: kernel: panic_on_warn set ...

Clear acl_access/acl_default after posix_acl_release is called to prevent UAF from being triggered.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.7% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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.
EPSS PROB
0.7%
EPSS %ILE
52nd
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 (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

February 27, 2025

Last Modified

October 15, 2026

Advisory Details (10)

Auto-updated Oct 13, 2026
Patch available.
Web page

nfsd: clear acl_access/acl_default after releasing them - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7faf14a7b0366f153284db0ad3347c457ea70136
Web page

nfsd: clear acl_access/acl_default after releasing them - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1fd94884174bd20beb1773990fd3b1aa877688d9
Web page

nfsd: clear acl_access/acl_default after releasing them - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f8d871523142f7895f250a856f8c4a4181614510
Web page

nfsd: clear acl_access/acl_default after releasing them - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/55d947315fb5f67a35e4e1d3e01bb886b9c6decf
Web page

nfsd: clear acl_access/acl_default after releasing them - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2e59b2b68782519560b3d6a41dd66a3d01a01cd3
Web page

nfsd: clear acl_access/acl_default after releasing them - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6f7cfee1a316891890c505563aa54f3476db52fd
Web page

nfsd: clear acl_access/acl_default after releasing them - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8a1737ae42c928384ab6447f6ee1a882510e85fa
Web page

SSA-082556

https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4178-1] linux security update

https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4102-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html

Vendor Advisories for CVE-2025-21796(4)

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-tools-oracle-edge (5.4.0.1149.159~18.04.1) @ bionic2026-10-28ubuntu
ubuntulinux-tools-azure-lts-20.04 (5.4.0.1154.148) @ focal2026-10-28ubuntu
ubuntulinux-tools-azure-fips-5.4 (5.4.0.1155.92) @ focal2026-10-28ubuntu
ubuntulinux-tools-aws (4.4.0.1186.190) @ xenial2026-10-28ubuntu
ubuntulinux-tools-kvm (4.15.0.1168.159) @ bionic2026-10-28ubuntu
ubuntulinux-tools-oracle-64k (6.11.0-1016.17) @ oracular2026-10-28ubuntu
ubuntulinux-tools-azure (4.15.0.1193.208~14.04.1) @ trusty2026-10-28ubuntu
ubuntulinux-tools-ibm-edge (6.8.0-1033.33~22.04.1) @ jammy2026-10-28ubuntu
ubuntulinux-tools-oracle-lts-20.04 (5.4.0.1149.143) @ focal2026-10-28ubuntu
ubuntulinux-tools-azure-nvidia-lts-24.04 (6.8.0-1022.23) @ noble2026-10-28ubuntu
ubuntulinux-tools-realtime (5.15.0.1084.88) @ jammy2026-10-28ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.242.226) @ bionic2026-10-28ubuntu
ubuntulinux-tools-nvidia-tegra-rt (5.15.0.1037.37) @ jammy2026-10-28ubuntu
ubuntulinux-tools-azure-fips (5.15.0.1089.74) @ jammy2026-10-28ubuntu
ubuntulinux-virtual-6.8 (6.8.0-78.78) @ noble2026-10-28ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1050.54) @ jammy2026-10-28ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.11.0-26.26) @ oracular2026-10-28ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.222.242~18.04.1) @ bionic2026-10-28ubuntu
ubuntulinux-virtual-lts-xenial (4.4.0.273.279) @ xenial2026-10-28ubuntu
ubuntulinux-tools-gcp-fips-5.4 (5.4.0.1154.96) @ focal2026-10-28ubuntu
ubuntulinux-tools-gcp-fips-4.15 (4.15.0.2086.84) @ bionic2026-10-28ubuntu
ubuntulinux-tools-fips (5.15.0.140.80) @ jammy2026-10-28ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.140.135) @ jammy2026-10-28ubuntu
ubuntulinux-tools-gcp-fips (5.15.0.1083.73) @ jammy2026-10-28ubuntu
ubuntulinux-tools-gke-5.15 (5.15.0.1081.80) @ jammy2026-10-28ubuntu
ubuntulinux-tools-aws (6.11.0-1014.15) @ oracular2026-10-28ubuntu
ubuntulinux-tools-aws-fips (5.15.0.1084.80) @ jammy2026-10-28ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1079.85~20.04.1) @ focal2026-10-28ubuntu
redhatkernel-0:5.14.0-611.5.1.el9_72025-11-11redhat
redhatkernel-0:6.12.0-124.8.1.el10_12025-11-11redhat
linuxKernel @ 5.10.235 (fixes >=2.6.13)—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 (45 versions)
  • every version up to 5.10.237-1: fixed in 5.10.237-1
—
linux-6.16.1.106-3~deb11u1 ... 6.1.128-1~deb11u1 (6 versions)
  • every version up to 6.1.129-1~deb11u1: fixed in 6.1.129-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (35 versions)
  • every version up to 6.1.129-1: fixed in 6.1.129-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.12.16-1: fixed in 6.12.16-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.12.16-1: fixed in 6.12.16-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(22)

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 10× in last 7d / 56× 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 97 of 259 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. 3 repeat rows among the latest 100 are merged into the row they repeat. The 162 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  2. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  3. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  4. 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  5. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  6. 2026-10-28 12:28 UTCEG score recompute
  7. 2026-10-28 12:28 UTCVendor advisory
  8. 2026-10-28 12:28 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  9. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  10. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  11. 2026-10-25 16:43 UTCEG score recompute
  12. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  13. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  14. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  15. 2026-10-22 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  16. 2026-10-21 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  17. 2026-10-21 15:21 UTCEG score recompute
  18. 2026-10-21 15:21 UTCVendor advisory
  19. 2026-10-21 15:21 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  20. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  21. 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  22. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  23. 2026-10-18 05:46 UTCEG score recompute
  24. 2026-10-17 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  25. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.7% · 51st percentile
Show 72 more
  1. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  2. 2026-10-15 02:28 UTCEG score recompute▼ 2.00
  3. 2026-10-15 02:28 UTCVendor advisory
  4. 2026-10-15 02:28 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-10-15 02:25 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  6. 2026-10-15 01:32 UTCEG score recompute
  7. 2026-10-15 01:32 UTCVendor advisory
  8. 2026-10-15 01:32 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  9. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  10. 2026-10-14 11:13 UTCEG score recompute
  11. 2026-10-14 11:13 UTCVendor advisory
  12. 2026-10-14 11:13 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  13. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  14. 2026-10-13 10:01 UTCVendor advisory
  15. 2026-10-13 10:00 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-12 17:19 UTCEG score recompute
  17. 2026-10-12 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  18. 2026-10-12 12:07 UTCVendor advisory
  19. 2026-10-12 12:06 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  20. 2026-10-11 20:51 UTCEG score recompute
  21. 2026-10-11 19:01 UTCEG score recompute
  22. 2026-10-11 15:41 UTCEG score recompute
  23. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  24. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  25. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  26. 2026-10-08 17:09 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  27. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  28. 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  29. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  30. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  31. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  32. 2026-10-02 16:26 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  33. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  34. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  35. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  36. 2026-09-28 02:02 UTCOSV refresh
  37. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  38. 2026-09-26 00:24 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  39. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  40. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  41. 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  42. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  43. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  44. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  45. 2026-09-16 05:13 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  46. 2026-09-15 03:09 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  47. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  48. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  49. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  50. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  51. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  52. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  53. 2026-09-08 09:51 UTCEG score recompute
  54. 2026-09-08 09:51 UTCVendor advisory
  55. 2026-09-08 09:51 UTCGHSA enrichmentGHSA-hgrx-p3hg-cw72 · GitHub severity HIGH · GitHub CVSS 7.8
  56. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  57. 2026-09-07 12:48 UTCOSV refresh
  58. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  59. 2026-09-05 15:28 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  60. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  61. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  62. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  63. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  64. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  65. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  66. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  67. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  68. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  69. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  70. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  71. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  72. 2026-08-20 22:31 UTCOSV refresh

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-21796?
CVE-2025-21796 is a high-severity vulnerability; its CVE record was published on February 27, 2025. In the Linux kernel, the following vulnerability has been resolved: nfsd: clear acl_access/acl_default after releasing them If getting acl_default fails, acl_access and acl_default will be released simultaneously. However, acl_access will still retain a pointer pointing to the released posix_acl,…
When was the CVE record for CVE-2025-21796 published?
The CVE record for CVE-2025-21796 was published on February 27, 2025. 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 15, 2026; the record at its source may have been updated since.
Is CVE-2025-21796 actively exploited?
CVE-2025-21796 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-21796?
CVE-2025-21796 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-21796?
A fix for CVE-2025-21796 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-21796 are linked in the Vendor Advisories panel on this page.

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