- Critical 9.1
CVE-2026-96252
Improper verification of cryptographic signature in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
Scores
The facts
- Published
- 13 October 2026
- Last changed
- 14 October 2026
- NVD status
- Undergoing Analysis
- Severity
- Critical, CVSS 9.1 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- Known exploited
- Not in the CISA Known Exploited Vulnerabilities catalogue in this build.
- EPSS
- 0.5% chance of exploitation activity in the next 30 days (percentile 40).
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