CVE-2007-5537
Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(2), and Unified...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2007-5537- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2007-5537- Updated
- 2026-11-02
EUVDEUVD-2007-5512 No score
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.
- Record
EUVD-2007-5512- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-62w5-fwxx-rpgg No score
Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(2), and Unified...
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.
- Record
GHSA-62w5-fwxx-rpgg- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| aliases, references, title | GitHub Advisories | |
| first indexed | CVE List, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2007-5537 is a high vulnerability (CVSS 7.8) in Cisco Unified Callmanager, published October 18, 2007. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.98%, the 80th percentile. No source names a fixed version.
References
securityfocus.com/bid/26105
exchange.xforce.ibmcloud.com/vulnerabilities/37246
vupen.com/english/advisories/2007/3532
cisco.com/en/US/products/products_security_advisory09186a00808dda34.shtml
osvdb.org/37941
securitytracker.com/id?1018828
secunia.com/advisories/27296
nvd.nist.gov/vuln/detail/CVE-2007-5537
github.com/advisories/GHSA-62w5-fwxx-rpgg