CVE-2025-34226
OpenPLC Runtime v3 Persistent DoS
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| OpenPLC Runtime Autonomy Logic |
≥ 3.0; < 095ee09623dd229b64ad3a1db38a901a3772f6fc (affected, git)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 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 | CNA: VulnCheck |
Exploit evidence
- https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844
exploit · ADP: CISA-ADP
References
- https://autonomylogic.com/CNA: VulnCheck · product
- https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844CNA: VulnCheck · issue-tracking
- https://github.com/thiagoralves/OpenPLC_v3/pull/297/commits/095ee09623dd229b64ad3a1db38a901a3772f6fcCNA: VulnCheck · issue-tracking, patch
- https://www.vulncheck.com/advisories/openplc-runtime-v3-persistent-denial-of-serviceCNA: VulnCheck · third-party-advisory
- https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844ADP: CISA-ADP · exploit
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