CVE-2026-57453: Vim: PowerShell Command Injection via Unescaped Filename in zip.vim Extraction

mediumCVSS 6.5CVE-2026-57453

CSIRTS triage

vendor: Vim product: Vim Code injection

What: PowerShell command injection can occur via an unescaped filename during zip.vim extraction in Vim.
Who is affected: Deployments using Vim with zip.vim functionality enabled.
Urgency: Remediation is medium urgency due to the medium severity rating, indicating a moderate risk of code injection.
Action: Apply the necessary updates to the Vim zip.vim functionality.

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

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 6.5
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57453

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-2026-574530.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-57453	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

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Recent advisories for Vim

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.

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