Memory leak in Cisco Unity Connection 9.x allows remote attackers to cause a denial of…
Priority LOW 25CWE-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 · Partial
- 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 Cisco Unity Connection 9.x allows remote attackers to cause a denial of service (memory consumption and process crash) by sending many TCP requests, aka Bug ID CSCud59736.
Why it matters now
EPSS 0.01232 69th 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:unity_connection:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:9.1:*:*:*:*:*:*:* | 9.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:9.1.1:*:*:*:*:*:*:* | 9.1.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:9.5:*:*:*:*:*:*:* | 9.5 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:unity_connection:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:9.1:*:*:*:*:*:*:* Versions 9.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:9.1.1:*:*:*:*:*:*:* Versions 9.1.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:9.5:*:*:*:*:*:*:* Versions 9.5 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2013-1129
- 2026-10-03 Alias added: GHSA-xvjj-mhxv-ccr9
References
More Cisco Unity Connection 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-2024-13188 Deserialization of untrusted data in Cisco Unified Contact Center Enterprise CVSS 3.1CRITICAL 10.0
- TI-2024-13207 Unrestricted file upload in Cisco Unity Connection CVSS 3.1CRITICAL 9.8
- TI-2017-09109 Improper authentication in Cisco Voice Operating System CVSS 3.0CRITICAL 9.8
- TI-2021-01089 Cisco Unified Communications Products Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
Sources
- CVE-2013-1129 · CVE Program
- CVE-2013-1129 · NVD
- FIRST EPSS
- GHSA-xvjj-mhxv-ccr9 · GitHub Advisory Database · CC BY 4.0
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