Cyber Posture

CVE-2026-42893

HighRCE

Published: 12 May 2026

Published
12 May 2026
Modified
12 May 2026
KEV Added
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Patch
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CVSS Score 7.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
EPSS Score N/A
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-42893 is a high-severity Command Injection (CWE-77) vulnerability. Its CVSS base score is 7.4 (High).

Operationally, it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as Enterprise AI Assistants.

NVD Description

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-77

AI Security AnalysisAI

AI Category
Enterprise AI Assistants
Risk Domain
N/A
OWASP Top 10 for LLMs 2025
None mapped
Classification Reason
Matched keywords: copilot

References