CVE-2025-25268

Configuration read and write via unauthenticated service

Published Jul 8, 2025 · Updated Jul 8, 2025

Missing authentication in Phoenix Contact CHARX SEC-3xxx firmware before 1.7.3 allows remote attackers to read and alter device configuration. The configuration service on TCP port 5001 accepts requests for protected functionality without first authenticating the requester. This exposure is limited to an adjacent network, and unauthorized configuration control compromises device confidentiality and integrity.

CVSS severity8.8
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Phoenix Contact CHARX SEC-3xxx firmware before 1.7.3 allows remote attackers to read and alter device configuration. The configuration service on TCP port 5001 accepts requests for protected functionality without first authenticating the requester. This exposure is limited to an adjacent network, and unauthorized configuration control compromises device confidentiality and integrity.

The record

CVE
CVE-2025-25268
Published
Jul 8, 2025
Updated
Jul 8, 2025
Vendor
Phoenix Contact
Product
CHARX SEC-3100
Classifications
CWE-306, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2025Record 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=0.0.0 <1.7.3

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Phoenix Contact · CHARX SEC-3100version=0.0.0 <1.7.3
Phoenix Contact · CHARX SEC-3150version=0.0.0 <1.7.3
Phoenix Contact · CHARX SEC-3050version=0.0.0 <1.7.3
Phoenix Contact · CHARX SEC-3000version=0.0.0 <1.7.3

Published CVSS scores

8.8CERT VDECVSS:3.1/AV:A/AC:L/PR:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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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