Skip to main content
CVE-2026-110022VulnerabilityPublished

The PFI plugin framework deploys executable assemblies (DLLs) from a signed plugin package into the local plugin

Source GCVE Database

0
Compare
Authoritative record:CVE-2026-110022· High 8.6

Not known to be exploited · CVSS 8.6 High : upgrade to 2026.6 soon.

Data as of 4 Nov 2026, 15:29 UTC

CVSS 4.0 base score
8.6High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (CERTVDE)CVSS 4.08.6
CNA (CERTVDE)CVSS 3.18.4
Patch
Available – fixed in 2026.6
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

Upgrade PLCnext Engineer to 2026.6.

Affected software

ProductAffectedFixed in
Phoenix ContactPLCnext EngineerAffected
  • <2026.6
Fixed in
  • 2026.6

AI-suggested

If you cannot patch yet, restrict local access to trusted users to prevent unauthorized modification of plugin packages.

Description

The PFI plugin framework has a vulnerability where it deploys DLLs from a signed plugin package but fails to verify the signature of all archive entries. An unauthenticated local attacker can replace an unsigned DLL outside the signed prefix in the archive, which passes signature verification and overwrites a legitimate signed assembly. This leads to the plugin loader instantiating attacker-supplied code without further integrity checks, resulting in full system compromise.

References

Community reviews

Loading reviews…