# 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.

- **Severity:** Low 1.3 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/R:A/RE:M`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Aug 2026
- **Updated:** 6 Aug 2026
- **Also known as:** GHSA-q6gx-whx7-mv4w

## 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 (Improper Input Validation)

## 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.

## Is CVE-2026-16316 being exploited?

There is no known exploitation of CVE-2026-16316 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-16316 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-16316 in the wild and no public exploit code.

Affected product: OMICRON StationGuard. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-16316/ (Markdown: https://insights.sbomify.com/CVE-2026-16316/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-16316
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16316
- OSV: https://osv.dev/vulnerability/CVE-2026-16316

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-16316/
Summaries are generated and may contain mistakes; the official description above is the record.