[NEW] [UNPATCHED] [medium] vim (vms_fixfilename): Multiple Vulnerabilities Enable Denial of Service

mediumCVE-2026-51400 CVE-2026-51401

A local attacker can exploit multiple vulnerabilities in vim to perform a denial of service attack.

CSIRTS triage

vendor: Vim product: Vim Denial of service

What: Multiple vulnerabilities in vim's vms_fixfilename function allow local denial of service attacks.
Who is affected: Local users with access to vim installations are affected.
Urgency: Medium severity and unpatched status warrant timely remediation, though exploitation requires local access.
Action: Monitor for vim patches and apply when available; restrict local access to vim if feasible.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Vim

Get an email when a new Vim advisory drops — max one per day, one-click unsubscribe.

Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-08-05
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2654

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-514000.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-514010.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-51400	coverage & exploitation status	NVD · CVE.org
CVE-2026-51401	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for vim (vms_fixfilename)

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-51401: An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary cod…nvd · 2026-08-04
highCVE-2026-51400: An issue in Vim Project v9.2.0389 and earlier allows a local attacker to execute arbitrary cod…nvd · 2026-08-04