CVE-2026-59117: Windows Terminal Remote Code Execution Vulnerability

highCVSS 7.5CVE-2026-59117

Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code over a network.

CSIRTS triage

vendor: Microsoft product: Windows Terminal Remote code execution

What: An integer overflow or wraparound allows unauthorized remote code execution.
Who is affected: Users of Windows Terminal are affected if they are running vulnerable versions.
Urgency: This is a high urgency issue due to its high severity and potential for exploitation.
Action: Update to the latest version of Windows Terminal to mitigate this vulnerability.

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: high — CVSS 7.5
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59117

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-2026-591170.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59117	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 Windows Terminal Remote

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-2026-54124: Windows Terminal Remote Code Execution Vulnerabilitymsrc · 2026-07-14