CVE-2025-41669Public exploitNetwork attack vector

Engineer-to-root execution via unsigned APP installation

Published May 27, 2026 · Updated May 27, 2026

Improper APP signature verification in Phoenix Contact PLCnext firmware before 2026.0.3 allows remote authenticated users to execute code as root. The Web-based Management APP Manager accepts a repackaged squashfs APP without validating its digital signature, then runs the APP-defined executable with root privileges. Engineer credentials and network access to the management interface are required; successful exploitation grants full control of the controller.

CVSS severity8.7
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper APP signature verification in Phoenix Contact PLCnext firmware before 2026.0.3 allows remote authenticated users to execute code as root. The Web-based Management APP Manager accepts a repackaged squashfs APP without validating its digital signature, then runs the APP-defined executable with root privileges. Engineer credentials and network access to the management interface are required; successful exploitation grants full control of the controller.

The record

CVE
CVE-2025-41669
Published
May 27, 2026
Updated
May 27, 2026
Vendor
Phoenix Contact
Product
BPC 9102S
Classifications
CWE-347, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0.0.0 <2026.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Phoenix Contact · BPC 9102Sversion=0.0.0 <2026.0.3
Phoenix Contact · AXC F 1252version=0.0.0 <2026.0.3
Phoenix Contact · RFC 4072Rversion=0.0.0 <2026.0.3
Phoenix Contact · AXC F 3152version=0.0.0 <2026.0.3
Phoenix Contact · VPLCNEXT CONTROL 2000version=0.0.0 <2026.0.3
Phoenix Contact · EPC 1522version=0.0.0 <2026.0.3
Phoenix Contact · RFC 4072Sversion=0.0.0 <2026.0.3
Phoenix Contact · VPLCNEXT CONTROL 1000version=0.0.0 <2026.0.3
Phoenix Contact · AXC F 2000 EAversion=0.0.0 <2026.0.3
Phoenix Contact · VPLCNEXT CONTROL 500version=0.0.0 <2026.0.3
Phoenix Contact · AXC F 1152version=0.0.0 <2026.0.3
Phoenix Contact · VPLCNEXT CONTROL 3000version=0.0.0 <2026.0.3
Phoenix Contact · VL3 UPC 2440 EDGEversion=0.0.0 <2026.0.3
Phoenix Contact · AXC F 2152version=0.0.0 <2026.0.3

Published CVSS scores

8.7CERT@VDECVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8CERT@VDECVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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