Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(2), and…
Priority LOW 38CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.01978 80th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2007-5537
- 2026-10-03 Alias added: GHSA-62w5-fwxx-rpgg
References
More Cisco Unified Callmanager vulnerabilities
- TI-2008-00019 Heap-based buffer overflow in the Certificate Trust List (CTL) Provider service… CVSS 2.0HIGH 10.0
- TI-2006-05092 Integer overflow in the Real-Time Information Server (RIS) Data Collector service… CVSS 2.0HIGH 10.0
- TI-2006-05091 Off-by-one error in the Certificate Trust List (CTL) Provider service (CTLProvider.exe)… CVSS 2.0HIGH 9.3
- TI-2007-05323 Buffer overflow in the Centralized TFTP File Locator Service in Cisco Unified… CVSS 2.0HIGH 10.0
- TI-2006-05364 Cisco Security Agent (CSA) for Linux 4.5 before 4.5.1.657 and 5.0 before 5.0.0.193, as… CVSS 2.0HIGH 7.8
- TI-2009-02727 Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 5.x before 5.1(3g)… CVSS 2.0HIGH 7.8
Sources
- CVE-2007-5537 · CVE Program
- CVE-2007-5537 · NVD
- FIRST EPSS
- GHSA-62w5-fwxx-rpgg · GitHub Advisory Database · CC BY 4.0
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