High severity7.4NVD Advisory· Published May 12, 2026· Updated May 13, 2026
CVE-2026-42893
CVE-2026-42893
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.
Affected products
2Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893nvdVendor Advisory
News mentions
1- Microsoft May 2026 Patch Tuesday fixes 120 flaws, no zero-daysBleepingComputer · May 12, 2026