Memory leak in the Certificate Trust List (CTL) Provider service in Cisco Unified…
Priority LOW 36CWE-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
Memory leak in the Certificate Trust List (CTL) Provider service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3) allows remote attackers to cause a denial of service (memory consumption and service interruption) via a series of malformed TCP packets, as demonstrated by TCPFUZZ, aka Bug ID CSCsj80609.
Why it matters now
EPSS 0.01179 67th 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
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:unified_communications_manager:4.1:*:*:*:*:*:*:* | 4.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:4.2:*:*:*:*:*:*:* | 4.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:4.3:*:*:*:*:*:*:* | 4.3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:5.1:\(1\):*:*:*:*:*:* | 5.1 \(1\) | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:5.1:\(2\):*:*:*:*:*:* | 5.1 \(2\) | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:5.1:\(2a\):*:*:*:*:*:* | 5.1 \(2a\) | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:5.1:\(2b\):*:*:*:*:*:* | 5.1 \(2b\) | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:5.1:\(3a\):*:*:*:*:*:* | 5.1 \(3a\) | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:6.0:\(1\):*:*:*:*:*:* | 6.0 \(1\) | Vulnerable | Cisco |
- cpe:2.3:a:cisco:unified_communications_manager:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:4.2:*:*:*:*:*:*:* Versions 4.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:4.3:*:*:*:*:*:*:* Versions 4.3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:5.1:\(1\):*:*:*:*:*:* Versions 5.1 \(1\) Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:5.1:\(2\):*:*:*:*:*:* Versions 5.1 \(2\) Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:5.1:\(2a\):*:*:*:*:*:* Versions 5.1 \(2a\) Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:5.1:\(2b\):*:*:*:*:*:* Versions 5.1 \(2b\) Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:5.1:\(3a\):*:*:*:*:*:* Versions 5.1 \(3a\) Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:6.0:\(1\):*:*:*:*:*:* Versions 6.0 \(1\) Vulnerable ·Cisco
Show 3 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:unified_communications_manager:6.0:\(1a\):*:*:*:*:*:* | 6.0 \(1a\) | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:6.1:*:*:*:*:*:*:* | 6.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unified_communications_manager:6.1:\(1a\):*:*:*:*:*:* | 6.1 \(1a\) | Vulnerable | Cisco |
- cpe:2.3:a:cisco:unified_communications_manager:6.0:\(1a\):*:*:*:*:*:* Versions 6.0 \(1a\) Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:6.1:*:*:*:*:*:*:* Versions 6.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unified_communications_manager:6.1:\(1a\):*:*:*:*:*:* Versions 6.1 \(1a\) Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2008-1742
- 2026-10-03 Alias added: GHSA-pg7h-qxx2-2q2c
References
More Cisco Unified Communications Manager vulnerabilities
- TI-2026-16259 Cisco Unified Communications Products Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
- TI-2026-16423 Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability KEVCVSS 3.1HIGH 8.6
- TI-2008-00019 Heap-based buffer overflow in the Certificate Trust List (CTL) Provider service… CVSS 2.0HIGH 10.0
- TI-2013-05779 The TFTP service in Cisco Unified Communications Manager (aka CUCM or Unified CM) allows… CVSS 3.1HIGH 7.3
- TI-2011-02932 Directory traversal vulnerability in Cisco Unified Communications Manager (CUCM) 5.x and… CVSS 2.0HIGH 7.8
Sources
- CVE-2008-1742 · CVE Program
- CVE-2008-1742 · NVD
- FIRST EPSS
- GHSA-pg7h-qxx2-2q2c · GitHub Advisory Database · CC BY 4.0
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