---
id: CVE-2025-34226
title: >-
  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
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 …
severity: none
cwe:
  - CWE-20
  - CWE-664
published: '2025-10-03'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:10:00.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-34226'
references:
  - url: 'https://autonomylogic.com/'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/thiagoralves/OpenPLC_v3/pull/297/commits/095ee09623dd229b64ad3a1db38a901a3772f6fc
    label: disclosure@vulncheck.com
  - url: >-
      https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openplc-runtime-v3-persistent-denial-of-service
    label: disclosure@vulncheck.com
  - url: >-
      https://openplc.discussion.community/post/persistant-dos-affecting-openplc-runtime-13722844
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - exploit-available
epss: 0.00663
epssPercentile: 0.50116
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/Eyodav/CVE-2025-34226'
  checkedAt: '2026-10-08T22:12:30.006Z'
exploitAvailable: true
ingestedAt: '2026-10-08T22:11:53.775Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.