Unrated severityNVD Advisory· Published Oct 18, 2007· Updated Jun 16, 2026
CVE-2007-5537
CVE-2007-5537
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.
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Affected products
4cpe:2.3:a:cisco:unified_callmanager:5.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:cisco:unified_callmanager:5.0:*:*:*:*:*:*:*
- (no CPE)range: 5.0
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*range: <=5.1\(2\)
- (no CPE)range: <5.1(2)
Patches
Vulnerability mechanics
References
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