CVE-2025-26788 Auth bypass in FIDO Server
Attackers can bypass authentication by exploiting a flaw where non-discoverable credentials are incorrectly treated as discoverable transactions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-26788?
CVE-2025-26788 is a high-severity authentication bypass vulnerability in StrongKey FIDO Server, published on 14 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
StrongKey FIDO Server before 4.15.1 treats a non-discoverable (namedcredential) flow as a discoverable transaction.
Weakness: CWE-639
Which versions are affected by CVE-2025-26788?
How do I fix CVE-2025-26788?
No fix has been published for CVE-2025-26788 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-2025-26788 being exploited?
There is no known exploitation of CVE-2025-26788 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as GHSA-w494-p3qw-3ww3.