CVE-2025-26685 Microsoft Defender for Identity Spoofing Vulnerability
An unauthorized attacker can perform spoofing over an adjacent network due to improper authentication in Microsoft Defender for Identity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-26685?
CVE-2025-26685 is a medium-severity authentication bypass vulnerability in Microsoft Defender for Identity, published on 13 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper authentication in Microsoft Defender for Identity allows an unauthorized attacker to perform spoofing over an adjacent network.
Weakness: CWE-287
Which versions are affected by CVE-2025-26685?
It affects 1 product.
Products include Microsoft Defender for Identity.
How do I fix CVE-2025-26685?
No fix has been published for CVE-2025-26685 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-26685 being exploited?
There is no known exploitation of CVE-2025-26685 in the wild and no public exploit code.
Sources
Also known as GHSA-22fv-h3f5-g95w.