CVE-2026-54124: Windows Terminal Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code locally.
CSIRTS triage
- What
- An integer overflow or wraparound allows an unauthorized attacker to execute code locally.
- Who is affected
- Users of Windows Terminal.
- Urgency
- Remediation is high urgency due to the potential for local code execution.
- Action
- Install the latest updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54124
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-2026-541240.43% 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-2026-54124 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] Microsoft Windows Terminal and 365 Copilot: Multiple Vulnerabilitiescert-bund
- highCVE-2026-54124: Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute …nvd
- unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl
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