CVE-2026-16316 Malformed IEC 61850 Sampled Values frames cause partial denial of service in StationGuard
A malformed IEC 61850 Sampled Values frame can cause a process termination in OMICRON StationGuard, temporarily disrupting alert processing for that specific traffic type.
- 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-2026-16316?
CVE-2026-16316 is a low-severity denial of service vulnerability in OMICRON StationGuard, published on 6 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OMICRON StationGuard 4.00 contains an improper input validation vulnerability in its IEC 61850 Sampled Values (SV) frame processing. A specially crafted SV frame can cause the affected process to terminate, disrupting alert processing for Sampled Values traffic. The vulnerability does not affect overall system availability or the processing of other traffic types, and the process is automatically restarted, and the failure is immediately reported to the user.
Weakness: CWE-20
Which versions are affected by CVE-2026-16316?
How do I fix CVE-2026-16316?
No fix has been published for CVE-2026-16316 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-16316 being exploited?
There is no known exploitation of CVE-2026-16316 in the wild and no public exploit code.
Sources
Also known as GHSA-q6gx-whx7-mv4w.