Wednesday 4 November
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Phoenix Contact warns of multiple flaws in PLCnext Engineer before version 2026.6

Severity
High
Sources
1

advisory AV26-1121 (4 November 2026) covers Phoenix Contact PLCnext Engineer versions prior to 2026.6. The vulnerabilities are a GSDX SignatureValue verification flaw, a signed plug-in validation bypass and a path traversal issue; no CVE identifiers or CVSS scores are given in the article. Defenders should upgrade to 2026.6 or later and check the vendor advisory for details.

For security analysts · Written by AI from 1 source · Wrong?

What to do

  1. Update PLCnext Engineer to version 2026.6 or later.
  2. Review the Phoenix Contact advisory links for full details of the affected components.

Written by AI from the sources, checked against them

Full story timeline · 1 update

  1. Wed 4 November[Control Systems] Phoenix Contact security advisory (AV26-1121)Canadian Centre for Cyber Security

Who reported · 1 outlet

Canadian Centre for Cyber Security

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