SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2008-0531

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.

HIGH 9.3EPSS 2.89%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 2.0
9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS
2.89% probability · 87th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-119
Affected
cisco/skinny client control protocol \(sccp\) firmware · cisco/session initiation protocol \(sip\) firmware
Source
psirt@cisco.com
EPSS trend
0%3%5%26 October 2026: 2.89%26 October 202626 October 2026

EPSS 2.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.