CVE-2025-34226

OpenPLC Runtime v3 Persistent DoS

State: Published
Severity: 7.1 High
Published: Oct 3, 2025
Updated: Aug 14, 2026
Reserved: Apr 15, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N	VulnCheck

Weaknesses

CWE-664 Improper Control of a Resource Through Its Lifetime
CWE-20 Improper Input Validation

Affected Products

Product	Versions
OpenPLC RuntimeAutonomy Logic	3.0 to before 095ee09623dd229b64ad3a1db38a901a3772f6fcAffected

References

https://autonomylogic.com/product
https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844issue-tracking
https://github.com/thiagoralves/OpenPLC_v3/pull/297/commits/095ee09623dd229b64ad3a1db38a901a3772f6fcissue-tracking
https://www.vulncheck.com/advisories/openplc-runtime-v3-persistent-denial-of-servicethird-party-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.