CVE-2007-4553: Thomson St 2030 SIP Phone

Medium severity, CVSS 5.0. EPSS: 8.2% chance of exploitation in the next 30 days.

The Thomson ST 2030 SIP phone with software 1.52.1 allows remote attackers to cause a denial of service (device hang) via an INVITE message with a Via header that contains a '/' (slash) instead of the required space following the SIP version number.

Affected products

• Thomson St 2030 SIP Phone: version 1 only

Published 2007-08-28. Last modified 2026-06-16.