CVE-2026-14480Network attack vector

Authenticated code execution via absolute upload paths

Published Jul 10, 2026 · Updated Jul 10, 2026

Path injection in OpenPLC Runtime v3 allows remote authenticated users to write arbitrary files through the legacy program-upload workflow. The workflow stores prog_file in Programs.File, then passes it to os.path.join without rejecting absolute paths, so the upload escapes the intended directory. Code execution requires a malicious C++ file to land in the runtime core and an operator to compile and start the program; execution occurs as the runtime user.

CVSS severity8.7
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path injection in OpenPLC Runtime v3 allows remote authenticated users to write arbitrary files through the legacy program-upload workflow. The workflow stores prog_file in Programs.File, then passes it to os.path.join without rejecting absolute paths, so the upload escapes the intended directory. Code execution requires a malicious C++ file to land in the runtime core and an operator to compile and start the program; execution occurs as the runtime user.

The record

CVE
CVE-2026-14480
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
OpenPLC Project
Product
OpenPLC Runtime
Classifications
CWE-73, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenPLC Project · OpenPLC Runtimeversion=v3

Published CVSS scores

8.7ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.9ICS-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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