CVE-2026-50695 Microsoft CVE debrief

Who should care

Administrators and users of Active Directory Federation Services should be aware of this vulnerability and take necessary precautions to mitigate the risk. This includes reviewing and updating access controls, monitoring for suspicious activity, and implementing additional security measures as needed. Security teams and vulnerability management teams should also be aware of this vulnerability and prioritize patching and mitigation efforts.

Technical summary

The vulnerability is a stack-based buffer overflow in Active Directory Federation Services. This type of vulnerability occurs when more data is written to a buffer than it is designed to hold, causing the extra data to spill over into adjacent areas of memory. This can lead to a denial of service (DoS) attack, allowing an unauthorized attacker to disrupt the service. The affected product is Active Directory Federation Services.

Defensive priority

High

Recommended defensive actions

• Apply the patch provided by Microsoft to fix the vulnerability.
• Review and update access controls to limit access to Active Directory Federation Services.
• Monitor for suspicious activity and implement additional security measures as needed.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-14T17:17:02.493Z and was last modified on 2026-07-16T12:33:54.633Z. The NVD entry is currently Analyzed. This vulnerability affects Active Directory Federation Services, allowing an unauthorized attacker to deny service over a network. Evidence is limited to public CVE and NVD information.

Official resources