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Case File

CVE-2007-5639

HIGH · CVSS 7.1 EPSS 1.79%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2007-10-23 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.1. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2007-5639
Severity
HIGH
CVSS
7.1
EPSS
1.79%

Original NVD Description

The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.