OpenPLC Runtime v3 Persistent DoS
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
OpenPLC Runtime v3 contains an input validation flaw in the /upload-program-action endpoint: the epoch_time field supplied during program uploads is not validated and can be crafted to induce corruption of the programs database. After a successful malformed upload the runtime continues to operate until a restart; on restart the runtime can fail to start because of corrupted database entries, resulting in persistent denial of service requiring complete rebase of the product to recover. This vulnerability was remediated by commit 095ee09.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
No affected products listed by the sources yet.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-34226
- 2026-10-03 Alias added: GHSA-qjpv-g9fx-fc98
- 2026-10-06 EPSS moved to the 50th–90th percentile
References
More Autonomy Logic vulnerabilities
- TI-2026-60045 Improper Neutralization of Input During Web Page Generation in OpenPLC Runtime v3 CVSS 4.0MEDIUM 5.3
Sources
- CVE-2025-34226 · CVE Program
- CVE-2025-34226 · NVD
- FIRST EPSS
- GHSA-qjpv-g9fx-fc98 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences