CVE-2026-24307

Improper validation of specified type of input in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Score

CVSS 3.1 9.3 Critical

Status

Analyzed - secure@microsoft.com

Published

2026-01-22

Last modified

2026-07-30

Weaknesses

CWE-1287

Affected products

• 365 Copilot (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24307