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9.3

Cisco IP Phone SIP firmware lets remote server run code

CVE-2008-0531 · published 18 years ago
Summary

The SIP software on Cisco 7940, 7940G, 7960 and 7960G phones can be tricked by a malicious phone system into running unwanted programs. This could let an attacker who controls a phone server take control of the phones or the network they are on. Update the phone firmware to the latest version or apply the vendor’s security patch as soon as possible.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
cisco skinny_client_control_protocol_\(sccp\)_firmware All versions
cpe:2.3:a:cisco:skinny_client_control_protocol_\(sccp\)_firmware:*:*:*:*:*:*:*:*
cisco session_initiation_protocol_\(sip\)_firmware All versions
cpe:2.3:a:cisco:session_initiation_protocol_\(sip\)_firmware:*:*:*:*:*:*:*:*
Original advisory text
Heap-based buffer overflow in Cisco Unified IP Phone 7940, 7940G, 7960, and 7960G running SIP firmware might allow remote SIP servers to execute arbitrary code via a crafted challenge/response mess...
Heap-based buffer overflow in Cisco Unified IP Phone 7940, 7940G, 7960, and 7960G running SIP firmware might allow remote SIP servers to execute arbitrary code via a crafted challenge/response message.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
9.3 Critical
Exploitation
3% chance of attack within 30 days
Type
CWE-119Buffer Overflow
Timeline
Published15 Feb 2008
Updated30 Oct 2026
First seen29 Sep 2026
Sources
CVE-2008-0531 · NVD
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