CVE-2026-19117 Delinea Secret Server FIDO2 credential registration authentication bypass vulnerability
An attacker can register a malicious FIDO2 credential to bypass authentication and take over user accounts in Delinea Secret Server on-premises deployments.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19117?
CVE-2026-19117 is a critical authentication bypass vulnerability in Delinea Secret Server (On-Prem), published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Under specific conditions, an attacker can register an attacker-controlled FIDO2 credential against a target account and then authenticate as that user. This issue affects on-premises deployments only.
Weakness: CWE-290
Which versions are affected by CVE-2026-19117?
How do I fix CVE-2026-19117?
No fix has been published for CVE-2026-19117 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-2026-19117 being exploited?
There is no known exploitation of CVE-2026-19117 in the wild and no public exploit code.
Sources
Also known as GHSA-frh3-mpfw-wxxq.