CVE-2007-5537

high Cisco
CVSS v3 Base Score
7.8
AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS Score
1.5%
Exploitation probability in 30 days
Top 19% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Confidentiality
None
Integrity
None
Availability
C
Published: October 18, 2007 (6783 days ago)
Last Modified: April 23, 2026
Vendor: Cisco
Source: NVD

Description

Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(2), and Unified CallManager 5.0, allow remote attackers to cause a denial of service (kernel panic) via a flood of SIP INVITE messages to UDP port 5060, which triggers resource exhaustion, aka CSCsi75822.

CWE

CWE-399

Affected Products

cisco unified callmanagercisco unified communications manager

References

🔗 osvdb.org 🔗 secunia.com 🔗 www.cisco.com 🔗 www.securityfocus.com 🔗 www.securitytracker.com