CVE-2026-54124
Actively exploited. CVE-2026-54124 is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
An attacker can exploit multiple vulnerabilities in Microsoft Windows Terminal and Microsoft 365 Copilot to execute arbitrary code, present false information, and escalate their privileges.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to execute arbitrary code and escalate privileges.
- Who is affected
- Users of Microsoft Windows Terminal and Microsoft 365 Copilot are affected.
- Urgency
- Remediation is high priority due to the potential for exploitation.
- Action
- Update Microsoft Windows Terminal and 365 Copilot to the latest versions.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 36% of all EPSS-scored CVEs.
Advisory coverage (4)
- high[NEW] [high] Microsoft Windows Terminal and 365 Copilot: Multiple Vulnerabilitiescert-bund · 2026-07-15
- highCVE-2026-54124: Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute …nvd · 2026-07-14
- unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl · 2026-07-14
- highCVE-2026-54124: Windows Terminal Remote Code Execution Vulnerabilitymsrc · 2026-07-14
External references
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