CVE-2026-74730

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-22. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-64417 (ENISA EUVD) · GHSA-rmc7-77jw-fvm4 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

Dan Aloni reports that he was able to hit a use-after-free bug if a FREE_STATEID operation gets delayed for whatever reason. Fix this by bumping the refcount of the 'struct nfs_server' object for the duration of the FREE_STATEID so it doesn't get cleaned up from underneath us while operations are still in flight.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 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 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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
43rd
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-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 2026-11-01). 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: 3 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 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)3 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 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

August 22, 2026

Last Modified

October 16, 2026

Advisory Details (8)

Auto-updated Oct 28, 2026
Patch available.
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ed2f92ce2fc48463c41e0e540b9a3454889e8af8
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ed1161ab6239761958b38d5667225634fc2be894
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d858ab09e787106432d4d9830bad9dfedf02f890
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d71dfffa512e71b166a889484e4c3b148a9a3af2
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cf616096a0f3a2b60f7d68b6b39674a6867ded9c
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/af62f1af182d33a0de38308c012841885d8ab92e
Web page

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/80ed3d762628b36c9e4b22fac7c65b72ef3b13dd

Vendor Advisories for CVE-2026-74730(2)

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

Patch Availability(6)

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

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)
  • every version up to 6.1.187-1: fixed in 6.1.187-1
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1
  • every version up to 6.12.107-1~deb12u1: fixed in 6.12.107-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (33 versions)
  • every version up to 6.12.105-1: fixed in 6.12.105-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (167 versions)
  • every version up to 7.1.9-1: fixed in 7.1.9-1
—

Additional Vendor Advisories

(6)

Data Freshness Timeline

(refreshed 28× in last 7d / 155× 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 100 of 566 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. None are among the latest 100 rows. The 466 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 03:10 UTCEG score recompute
  2. 2026-11-02 03:10 UTCVendor advisory
  3. 2026-11-02 03:10 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-11-01 01:12 UTCEG score recompute
  6. 2026-11-01 01:12 UTCVendor advisory
  7. 2026-11-01 01:12 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  9. 2026-10-30 23:12 UTCEG score recompute
  10. 2026-10-30 23:12 UTCVendor advisory
  11. 2026-10-30 23:12 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-10-29 21:14 UTCEG score recompute
  14. 2026-10-29 21:14 UTCVendor advisory
  15. 2026-10-29 21:14 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-10-28 19:15 UTCEG score recompute
  18. 2026-10-28 19:15 UTCVendor advisory
  19. 2026-10-28 19:15 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-27 17:17 UTCEG score recompute
  22. 2026-10-27 17:17 UTCVendor advisory
  23. 2026-10-27 17:17 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
Show 75 more
  1. 2026-10-26 15:18 UTCEG score recompute
  2. 2026-10-26 15:18 UTCVendor advisory
  3. 2026-10-26 15:18 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-10-25 14:03 UTCEG score recompute
  6. 2026-10-25 12:24 UTCEG score recompute
  7. 2026-10-25 12:24 UTCVendor advisory
  8. 2026-10-25 12:23 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-24 10:25 UTCEG score recompute
  11. 2026-10-24 10:25 UTCVendor advisory
  12. 2026-10-24 10:25 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  14. 2026-10-23 08:27 UTCEG score recompute
  15. 2026-10-23 08:27 UTCVendor advisory
  16. 2026-10-23 08:26 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-22 06:26 UTCEG score recompute
  19. 2026-10-22 06:26 UTCVendor advisory
  20. 2026-10-22 06:26 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-10-21 04:26 UTCEG score recompute
  23. 2026-10-21 04:26 UTCVendor advisory
  24. 2026-10-21 04:26 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  26. 2026-10-20 02:26 UTCEG score recompute
  27. 2026-10-20 02:26 UTCVendor advisory
  28. 2026-10-20 02:26 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  29. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  30. 2026-10-19 00:27 UTCEG score recompute
  31. 2026-10-19 00:27 UTCVendor advisory
  32. 2026-10-19 00:27 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  33. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  34. 2026-10-18 03:14 UTCEG score recompute
  35. 2026-10-17 22:26 UTCEG score recompute
  36. 2026-10-17 22:26 UTCVendor advisory
  37. 2026-10-17 22:26 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  38. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  39. 2026-10-16 20:26 UTCEG score recompute
  40. 2026-10-16 20:26 UTCVendor advisory
  41. 2026-10-16 20:26 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  42. 2026-10-16 19:25 UTCEG score recompute
  43. 2026-10-16 19:25 UTCVendor advisory
  44. 2026-10-16 19:25 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  45. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  46. 2026-10-15 19:52 UTCEG score recompute
  47. 2026-10-15 19:52 UTCVendor advisory
  48. 2026-10-15 19:51 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  49. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  50. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  51. 2026-10-14 13:29 UTCVendor advisory
  52. 2026-10-14 13:28 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  53. 2026-10-14 09:47 UTCEG score recompute
  54. 2026-10-14 09:47 UTCVendor advisory
  55. 2026-10-14 09:47 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  56. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  57. 2026-10-13 07:37 UTCEG score recompute
  58. 2026-10-13 07:37 UTCVendor advisory
  59. 2026-10-13 07:36 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  60. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  61. 2026-10-12 15:39 UTCEG score recompute
  62. 2026-10-12 05:38 UTCVendor advisory
  63. 2026-10-12 05:37 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  64. 2026-10-11 19:25 UTCEG score recompute
  65. 2026-10-11 16:41 UTCEG score recompute
  66. 2026-10-11 14:00 UTCEG score recompute
  67. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  68. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  69. 2026-10-10 14:21 UTCEG score recompute
  70. 2026-10-10 14:21 UTCVendor advisory
  71. 2026-10-10 14:21 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  72. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  73. 2026-10-09 05:07 UTCEG score recompute
  74. 2026-10-09 05:07 UTCVendor advisory
  75. 2026-10-09 05:07 UTCGHSA enrichmentGHSA-rmc7-77jw-fvm4 · GitHub severity CRITICAL · GitHub CVSS 9.8

Frequently asked(5)

What is CVE-2026-74730?
CVE-2026-74730 is a critical-severity vulnerability; its CVE record was published on August 22, 2026. In the Linux kernel, the following vulnerability has been resolved: NFS: Pin the 'struct nfs_server' during a FREE_STATEID call Dan Aloni reports that he was able to hit a use-after-free bug if a FREE_STATEID operation gets delayed for whatever reason. Fix this by bumping the refcount of the…
When was the CVE record for CVE-2026-74730 published?
The CVE record for CVE-2026-74730 was published on August 22, 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 16, 2026; the record at its source may have been updated since.
Is CVE-2026-74730 actively exploited?
CVE-2026-74730 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74730?
CVE-2026-74730 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-74730?
A fix for CVE-2026-74730 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-74730 are linked in the Vendor Advisories panel on this page.

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