CVE-2026-89792

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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

ksmbd: prevent out-of-bounds reads in share config responses

Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the path length.

CVSS v3
7.1
EG Score
7.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 16, 2026

Last Modified

October 3, 2026

Advisory Details (2)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

ksmbd: prevent out-of-bounds reads in share config responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f25e93768fcc5d8287e50b1ec52a42e4c276df34
generic

ksmbd: prevent out-of-bounds reads in share config responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/61a8d06600c8c397f9a7e01940479d4c94a82f5f

Vendor Advisories for CVE-2026-89792(1)

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

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1
  • every version up to 6.12.111-1~deb12u1: fixed in 6.12.111-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (35 versions)
  • every version up to 6.12.111-1: fixed in 6.12.111-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 26× in last 7d / 80× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-10-05 02:28 UTCEG score recompute
  2. 2026-10-05 02:28 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 13:30 UTCGHSA enrichment
  5. 2026-10-04 00:32 UTCEG score recompute
  6. 2026-10-04 00:32 UTCGHSA enrichment
  7. 2026-10-03 11:34 UTCGHSA enrichment
  8. 2026-10-03 01:28 UTCEG score recompute
  9. 2026-10-03 01:28 UTCGHSA enrichment
  10. 2026-10-02 12:27 UTCGHSA enrichment
  11. 2026-10-01 22:40 UTCEG score recompute
  12. 2026-10-01 22:40 UTCGHSA enrichment
  13. 2026-10-01 19:51 UTCEPSS rescore
  14. 2026-10-01 09:41 UTCGHSA enrichment
  15. 2026-09-30 20:44 UTCEG score recompute
  16. 2026-09-30 20:44 UTCGHSA enrichment
  17. 2026-09-30 15:04 UTCEPSS rescore
  18. 2026-09-30 07:46 UTCGHSA enrichment
  19. 2026-09-29 18:46 UTCEG score recompute
  20. 2026-09-29 18:45 UTCGHSA enrichment
  21. 2026-09-29 04:36 UTCEG score recompute
  22. 2026-09-29 04:36 UTCGHSA enrichment
  23. 2026-09-28 15:38 UTCEG score recompute
  24. 2026-09-28 15:38 UTCGHSA enrichment
  25. 2026-09-28 13:52 UTCEPSS rescore
Show 55 more
  1. 2026-09-28 13:52 UTCEPSS rescore
  2. 2026-09-28 02:28 UTCEG score recompute
  3. 2026-09-28 02:28 UTCGHSA enrichment
  4. 2026-09-27 13:49 UTCEPSS rescore
  5. 2026-09-27 13:30 UTCGHSA enrichment
  6. 2026-09-27 00:32 UTCEG score recompute
  7. 2026-09-27 00:32 UTCGHSA enrichment
  8. 2026-09-26 15:59 UTCEPSS rescore
  9. 2026-09-26 11:34 UTCEG score recompute
  10. 2026-09-26 11:34 UTCGHSA enrichment
  11. 2026-09-25 22:34 UTCGHSA enrichment
  12. 2026-09-25 09:06 UTCGHSA enrichment
  13. 2026-09-24 20:08 UTCEG score recompute
  14. 2026-09-24 20:08 UTCGHSA enrichment
  15. 2026-09-24 14:04 UTCEPSS rescore
  16. 2026-09-24 07:10 UTCGHSA enrichment
  17. 2026-09-23 18:12 UTCEG score recompute
  18. 2026-09-23 18:12 UTCGHSA enrichment
  19. 2026-09-23 17:54 UTCEPSS rescore
  20. 2026-09-23 05:15 UTCGHSA enrichment
  21. 2026-09-22 16:17 UTCEG score recompute
  22. 2026-09-22 16:17 UTCGHSA enrichment
  23. 2026-09-22 16:01 UTCEPSS rescore
  24. 2026-09-22 03:19 UTCEG score recompute
  25. 2026-09-22 03:18 UTCGHSA enrichment
  26. 2026-09-21 21:09 UTCEPSS rescore
  27. 2026-09-21 14:20 UTCEG score recompute
  28. 2026-09-21 14:20 UTCGHSA enrichment
  29. 2026-09-21 13:20 UTCEG score recompute
  30. 2026-09-21 13:20 UTCGHSA enrichment
  31. 2026-09-21 00:39 UTCEG score recompute
  32. 2026-09-21 00:39 UTCGHSA enrichment
  33. 2026-09-20 20:16 UTCEPSS rescore
  34. 2026-09-20 11:40 UTCGHSA enrichment
  35. 2026-09-19 22:38 UTCEG score recompute
  36. 2026-09-19 22:38 UTCGHSA enrichment
  37. 2026-09-19 09:40 UTCGHSA enrichment
  38. 2026-09-18 20:38 UTCEG score recompute
  39. 2026-09-18 20:38 UTCGHSA enrichment
  40. 2026-09-18 19:28 UTCEPSS rescore
  41. 2026-09-18 07:19 UTCEG score recompute
  42. 2026-09-18 07:19 UTCGHSA enrichment
  43. 2026-09-17 19:32 UTCEPSS rescore
  44. 2026-09-17 18:20 UTCGHSA enrichment
  45. 2026-09-17 04:23 UTCEG score recompute
  46. 2026-09-17 04:23 UTCGHSA enrichment
  47. 2026-09-16 15:25 UTCEG score recompute
  48. 2026-09-16 15:25 UTCGHSA enrichment
  49. 2026-09-16 14:49 UTCEG score recompute▲ 7.10
  50. 2026-09-16 14:49 UTCGHSA enrichment
  51. 2026-09-16 14:45 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  52. 2026-09-16 14:09 UTCEPSS rescore
  53. 2026-09-16 09:29 UTCNVD update
  54. 2026-09-16 08:52 UTCEG score recompute
  55. 2026-09-16 08:51 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-89792?
CVE-2026-89792 is a high vulnerability published on September 16, 2026. In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the path…
When was CVE-2026-89792 disclosed?
CVE-2026-89792 was first published on September 16, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89792 actively exploited?
CVE-2026-89792 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89792?
CVE-2026-89792 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89792?
No fix for CVE-2026-89792 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-89792 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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