Is CVE-2026-24307 actively exploited?

CVE-2026-24307 has no public evidence of in-the-wild exploitation as of 2026-02-12.

What is the CVSS score for CVE-2026-24307?

CVE-2026-24307 has a CVSS score of 9.3 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

Patch guidance is available from microsoft security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-24307.

1 product: microsoft 365 copilot.

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

Primary Vendor: MICROSOFT
Published: 1/22/2026
Last Modified: 2/12/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.