Vulnerability · Published Oct 14, 2025 · Assigned by CERTVDE
CVE-2025-41707Phoenix Contact: WebSocket Handler Denial of Service
Medium 5.3
In plain English
A medium-severity buffer overflow in QUINT4-UPS/24DC/24DC/10/EIP from Phoenix Contact. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)1.4%top 27.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The websocket handler is vulnerable to a denial of service condition. An unauthenticated remote attacker can send a crafted websocket message to trigger the issue without affecting the core functionality.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | QUINT4-UPS/24DC/24DC/5/EIP | VC:00 – before VC:07 |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/10/EIP | VC:00 – before VC:07 |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/20/EIP | VC:00 – before VC:07 |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/40/EIP | VC:00 – before VC:07 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L