CVE-2025-34226

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.

Affected Software

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844

References

• https://autonomylogic.com/
• https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844
• https://github.com/thiagoralves/OpenPLC_v3/pull/297/commits/095ee09623dd229b64ad3a1db38a901a3772f6fc
• https://www.vulncheck.com/advisories/openplc-runtime-v3-persistent-denial-of-service

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