CVE-2026-51401

HIGHPre-NVD 7.77.7—
EchelonGraph scoreHIGH confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 0

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

An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary code via the vms_fixfilename() function within file vim/src/os_vms.c

CVSS v3
7.7
EG Score
7.7(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

Security Advisory for CVE-2026-51400 & CVE-2026-51401 (Vim os_vms.c vulnerabilities) · GitHub

https://gist.github.com/jiejiaodedengdai/ff5d34a523167e09b7d8330cc9f5d4e5#file-vim-os_vms-cves-md
generic

vim/src/os_vms.c at master · vim/vim · GitHub

https://github.com/vim/vim/blob/master/src/os_vms.c
generic

GitHub - vim/vim: The official Vim repository · GitHub

https://github.com/vim/vim

Vendor Advisories for CVE-2026-51401(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 67× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 22:33 UTCGHSA enrichment
  3. 2026-08-20 10:29 UTCGHSA enrichment
  4. 2026-08-19 22:25 UTCEG score recompute
  5. 2026-08-19 22:25 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 10:21 UTCGHSA enrichment
  8. 2026-08-18 22:16 UTCEG score recompute
  9. 2026-08-18 22:16 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 10:13 UTCGHSA enrichment
  12. 2026-08-17 22:08 UTCEG score recompute
  13. 2026-08-17 22:08 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 10:00 UTCGHSA enrichment
  16. 2026-08-16 21:57 UTCEG score recompute
  17. 2026-08-16 21:57 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 09:52 UTCEG score recompute
  20. 2026-08-16 09:52 UTCGHSA enrichment
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-15 21:49 UTCGHSA enrichment
  23. 2026-08-15 09:45 UTCEG score recompute
  24. 2026-08-15 09:45 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 42 more
  1. 2026-08-14 21:41 UTCGHSA enrichment
  2. 2026-08-14 09:38 UTCEG score recompute
  3. 2026-08-14 09:38 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 21:34 UTCGHSA enrichment
  6. 2026-08-13 09:30 UTCGHSA enrichment
  7. 2026-08-12 21:27 UTCEG score recompute
  8. 2026-08-12 21:27 UTCGHSA enrichment
  9. 2026-08-12 13:51 UTCEPSS rescore
  10. 2026-08-12 09:23 UTCGHSA enrichment
  11. 2026-08-11 21:20 UTCEG score recompute
  12. 2026-08-11 21:19 UTCGHSA enrichment
  13. 2026-08-11 09:14 UTCEG score recompute
  14. 2026-08-11 09:14 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 21:11 UTCGHSA enrichment
  17. 2026-08-10 09:07 UTCGHSA enrichment
  18. 2026-08-09 21:03 UTCEG score recompute
  19. 2026-08-09 21:03 UTCGHSA enrichment
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-09 08:59 UTCGHSA enrichment
  22. 2026-08-08 20:56 UTCEG score recompute
  23. 2026-08-08 20:56 UTCGHSA enrichment
  24. 2026-08-08 16:37 UTCEPSS rescore
  25. 2026-08-08 08:52 UTCGHSA enrichment
  26. 2026-08-07 20:49 UTCEG score recompute
  27. 2026-08-07 20:49 UTCGHSA enrichment
  28. 2026-08-07 08:45 UTCGHSA enrichment
  29. 2026-08-06 20:41 UTCEG score recompute
  30. 2026-08-06 20:41 UTCGHSA enrichment
  31. 2026-08-06 13:47 UTCEPSS rescore
  32. 2026-08-06 08:37 UTCEG score recompute
  33. 2026-08-06 08:37 UTCGHSA enrichment
  34. 2026-08-05 20:33 UTCGHSA enrichment
  35. 2026-08-05 19:40 UTCEG score recompute▲ 7.70
  36. 2026-08-05 19:40 UTCGHSA enrichment
  37. 2026-08-05 19:40 UTCMITRE cvelistV5CVSS v3 → 7.7 · severity → HIGH
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 21:32 UTCGHSA enrichment
  40. 2026-08-04 21:26 UTCNVD update
  41. 2026-08-04 21:13 UTCEG score recompute
  42. 2026-08-04 21:10 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-51401?
CVE-2026-51401 is a high vulnerability published on August 4, 2026. An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary code via the vmsfixfilename() function within file vim/src/osvms.c
When was CVE-2026-51401 disclosed?
CVE-2026-51401 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51401 actively exploited?
CVE-2026-51401 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.3% of all scored CVEs.
What is the CVSS score of CVE-2026-51401?
CVE-2026-51401 has a CVSS v3.1 base score of 7.7 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51401?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51401, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-51401

Explore →

Is Your Infrastructure Affected by CVE-2026-51401?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs