CVE-2026-16315 Authentication and authorization bypass via cryptographic timing side-channel attack in StationGuard
Unauthenticated attackers can bypass authentication via timing side-channels to impersonate clients and modify system configuration in OMICRON StationGuard.
- 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-2026-16315?
CVE-2026-16315 is a high-severity authentication bypass vulnerability in OMICRON StationGuard, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OMICRON StationGuard before version 4.10 contains a cryptographic timing side-channel vulnerability in the backend authentication mechanism that may allow an unauthenticated attacker to forge valid authentication credentials, bypass authentication and authorization, and impersonate legitimate clients. An attacker can gain full access to the system configuration, allowing modification, reset, or unauthorized alteration of system parameters.
Weakness: CWE-208
Which versions are affected by CVE-2026-16315?
How do I fix CVE-2026-16315?
No fix has been published for CVE-2026-16315 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-2026-16315 being exploited?
There is no known exploitation of CVE-2026-16315 in the wild and no public exploit code.
Sources
Also known as GHSA-5qgx-gc63-5xc9.