--- title: "CVE-2026-96252: Active Directory Federation Services - Spoofing" description: "Active Directory Federation Services contains a spoofing vulnerability caused by improper verification of cryptographic signatures, letting unauthorized attackers perform spoofing over a network, exploit requires network access." url: https://panop.io/threat-heartbeat/CVE-2026-96252/ --- # CVE-2026-96252 Active Directory Federation Services - Spoofing Active Directory Federation Services contains a spoofing vulnerability caused by improper verification of cryptographic signatures, letting unauthorized attackers perform spoofing over a network, exploit requires network access. CVSS base score 9.1 /10 Critical CISA KEV Not listed Public exploit None known Authentication Not required EPSS 0.48% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-96252) ## Details Type Spoofing Impact Man In The Middle CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Published 13 October 2026 Updated 15 October 2026 Weakness [CWE-347](https://cwe.mitre.org/data/definitions/347.html) ## Vendor fix Update to the latest version with proper cryptographic signature verification. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-96252](https://nvd.nist.gov/vuln/detail/CVE-2026-96252) - [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96252](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96252) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)