Phoenix Contact: WebSocket Message Interception Leaks Webfrontend Credentials
Priority LOW 30CWE-523Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
An unauthenticated remote attacker (MITM) can intercept the websocket messages to gain access to the login credentials for the Webfrontend.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00463 40th percentileScored 2026-11-07
Fix Fixed QUINT4-UPS/24DC/24DC/5/EIP (Phoenix Contact): VC:07QUINT4-UPS/24DC/24DC/10/EIP (Phoenix Contact): VC:07+2 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Phoenix Contact | QUINT4-UPS/24DC/24DC/5/EIP | VC:00 to before VC:07 | VC:07 | Patch available | CNA |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/10/EIP | VC:00 to before VC:07 | VC:07 | Patch available | CNA |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/20/EIP | VC:00 to before VC:07 | VC:07 | Patch available | CNA |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/40/EIP | VC:00 to before VC:07 | VC:07 | Patch available | CNA |
- QUINT4-UPS/24DC/24DC/5/EIP VendorPhoenix Contact Affected VC:00 to before VC:07 Fixed in VC:07 Patch available CNA
- QUINT4-UPS/24DC/24DC/10/EIP VendorPhoenix Contact Affected VC:00 to before VC:07 Fixed in VC:07 Patch available CNA
- QUINT4-UPS/24DC/24DC/20/EIP VendorPhoenix Contact Affected VC:00 to before VC:07 Fixed in VC:07 Patch available CNA
- QUINT4-UPS/24DC/24DC/40/EIP VendorPhoenix Contact Affected VC:00 to before VC:07 Fixed in VC:07 Patch available CNA
Remediation
- Fix · CNA QUINT4-UPS/24DC/24DC/5/EIP (Phoenix Contact) Fixed in VC:07
- Fix · CNA QUINT4-UPS/24DC/24DC/10/EIP (Phoenix Contact) Fixed in VC:07
- Fix · CNA QUINT4-UPS/24DC/24DC/20/EIP (Phoenix Contact) Fixed in VC:07
- Fix · CNA QUINT4-UPS/24DC/24DC/40/EIP (Phoenix Contact) Fixed in VC:07
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Phoenix Contact QUINT4-UPS/24DC/24DC/10/EIP, QUINT4-UPS/24DC/24DC/20/EIP and 2 more products VC:07
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2025-27670 Phoenix Contact: WebSocket Handler Denial of ServicePriority LOW 27
- TI-2025-27669 Phoenix Contact: Webserver Denial of Service through Malformed Content-LengthPriority LOW 27
- TI-2025-27667 Phoenix Contact: Unauthenticated Modbus Service DoS via Crafted Function CodePriority LOW 27
Timeline
- 2026-10-02 Threatist record created from CVE-2025-41705
- 2026-10-03 Alias added: GHSA-99cx-g736-3whp
References
More Phoenix Contact vulnerabilities
- TI-2014-07463 Phoenix Contact Software ProConOs and MultiProg Missing Authentication for Critical Function CVSS 2.0CRITICAL 10.0
- TI-2024-17093 PHOENIX CONTACT: Remote code execution in CHARX Series CVSS 3.1CRITICAL 9.8
- TI-2022-13692 Insufficient Verification of Data Vulnerability in PHOENIX CONTACT classic line industrial controllers CVSS 3.1CRITICAL 9.8
- TI-2026-21959 Remote code execution via uploading a malicious IODD file CVSS 3.1CRITICAL 9.8
- TI-2026-21940 Authentication Bypass in _account_log CVSS 3.1CRITICAL 9.8
- TI-2023-03334 PHOENIX CONTACT: OS Command Injection in WP 6xxx Web panels CVSS 3.1CRITICAL 10.0
Sources
- CVE-2025-41705 · CVE Program
- CVE-2025-41705 · NVD
- FIRST EPSS
- GHSA-99cx-g736-3whp · GitHub Advisory Database · CC BY 4.0
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