High 7.1Published Oct 3, 2025

CVE-2025-34226OpenPLC Runtime v3 Persistent DoS

Updated under an hour ago (Oct 27, 2026, 5:20 AM ET)

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It affects Autonomy Logic OpenPLC Runtime. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Autonomy Logic OpenPLC Runtime

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-664, CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Aug 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Autonomy Logic OpenPLC Runtime autonomy_logic:openplc_runtime (from the name)	from 3.0 before 095ee09623dd229b64ad3a1db38a901a3772f6fc	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.