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Vulnerabilities CVE-2025-34226

CVE-2025-34226

High
Open
TLP:CLEAR

OpenPLC Runtime v3 Persistent DoS

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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.

Details

CVSS Score
7.1
EPSS Score
0.62%

46.6th percentile

CVSS Vector
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
Confidence
90%
Published
Oct 3, 2025
Last Modified
Aug 14, 2026
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