CVE-2026-26133

EUVD-2026-12111
AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Command Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
microsoftCNA
7.1 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 38.09%
Affected Products (NVD)
VendorProductVersion
microsoftoutlook
-
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
microsoftonenote
1.0.0 ≤
𝑥
< 2.106.26020617
CNA
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133