CyberSecBulletin
CVE-2025-41669NVD status: Deferred

AXC F 1152: Improper Verification of Cryptographic Signature

Published Updated By the CyberSecBulletin desk

CVE-2025-41669 is a high-severity improper verification of cryptographic signature vulnerability in AXC F 1152 from Phoenix Contact, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 2026.0.3 as the first without the flaw, so updating AXC F 1152 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.22% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update AXC F 1152 to 2026.0.3 or a later version.
  2. Update AXC F 1252 to 2026.0.3 or a later version.
  3. Update AXC F 2000 EA to 2026.0.3 or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
Phoenix ContactAXC F 1152before 2026.0.32026.0.3
Phoenix ContactAXC F 1252before 2026.0.32026.0.3
Phoenix ContactAXC F 2000 EAbefore 2026.0.32026.0.3
Phoenix ContactAXC F 2152before 2026.0.32026.0.3
Phoenix ContactAXC F 3152before 2026.0.32026.0.3
Phoenix ContactBPC 9102Sbefore 2026.0.32026.0.3
Phoenix ContactEPC 1522before 2026.0.32026.0.3
Phoenix ContactRFC 4072Rbefore 2026.0.32026.0.3
Phoenix ContactRFC 4072Sbefore 2026.0.32026.0.3
Phoenix ContactVL3 UPC 2440 EDGEbefore 2026.0.32026.0.3
Phoenix ContactVPLCNEXT CONTROL 1000before 2026.0.32026.0.3
Phoenix ContactVPLCNEXT CONTROL 2000before 2026.0.32026.0.3
Phoenix ContactVPLCNEXT CONTROL 3000before 2026.0.32026.0.3
Phoenix ContactVPLCNEXT CONTROL 500before 2026.0.32026.0.3

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (cert.vde.com).

Scoring systemScoreSeverityScored by
CVSS 4.08.7HighCNA (cert.vde.com)
CVSS 3.18.8HighCNA (cert.vde.com)

Official description

The Web-based Management allows a remote low privileged Engineer user to install additional APPs on the device downloaded from the PLCnext Store without implementing any data verification mechanism, leading to the capability for an Engineer user to reach arbitrary code execution with root privileges on the PLC device. A successful exploitation may allow to install a manipulated APP package, potentially impacting integrity and availability of the PLCnext Control.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

More Improper Verification of Cryptographic Signature vulnerabilities (CWE-347)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in AXC F 1152

All AXC F 1152 vulnerabilities

Recent Improper Verification of Cryptographic Signature vulnerabilities

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