CVE-2007-5537

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-10-18 · updated 2026-06-16
Weakness: CWE-399

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.

Affected products

Cisco Unified Callmanager: 5.0
Cisco Unified Communications Manager: through 5.1\(2\)

References

http://osvdb.org/37941
http://secunia.com/advisories/27296
http://www.cisco.com/en/US/products/products_security_advisory09186a00808dda34.shtml
http://www.securityfocus.com/bid/26105
http://www.securitytracker.com/id?1018828
http://www.vupen.com/english/advisories/2007/3532
https://exchange.xforce.ibmcloud.com/vulnerabilities/37246
http://osvdb.org/37941
http://secunia.com/advisories/27296
http://www.cisco.com/en/US/products/products_security_advisory09186a00808dda34.shtml
http://www.securityfocus.com/bid/26105
http://www.securitytracker.com/id?1018828

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