Cisco Unity Connection Server-Side Request Forgery Vulnerability
Priority LOW 31CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attacker to conduct SSRF attacks through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Unity Connection | 12.5(1); 12.5(1)SU1; 12.5(1)SU2; 12.5(1)SU3; 12.5(1)SU4; 14; 12.5(1)SU5; 14SU1; 12.5(1)SU6; 14SU2; 12.5(1)SU7; 14SU3; 12.5(1)SU8; 14SU3a; 12.5(1)SU8a; 15; 15SU1; 14SU4; 12.5(1)SU9; 15SU2; 15SU3 | — | No fix listed | CNA |
- Cisco Unity Connection VendorCisco Affected 12.5(1); 12.5(1)SU1; 12.5(1)SU2; 12.5(1)SU3; 12.5(1)SU4; 14; 12.5(1)SU5; 14SU1; 12.5(1)SU6; 14SU2; 12.5(1)SU7; 14SU3; 12.5(1)SU8; 14SU3a; 12.5(1)SU8a; 15; 15SU1; 14SU4; 12.5(1)SU9; 15SU2; 15SU3 Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:* | before 14.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:14.0:*:*:*:*:*:*:* | 14.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:14su1:*:*:*:*:*:*:* | 14su1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:14su2:*:*:*:*:*:*:* | 14su2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:14su3:*:*:*:*:*:*:* | 14su3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:14su4:*:*:*:*:*:*:* | 14su4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:15.0:*:*:*:*:*:*:* | 15.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:15su1:*:*:*:*:*:*:* | 15su1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:15su2:*:*:*:*:*:*:* | 15su2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:unity_connection:15su3:*:*:*:*:*:*:* | 15su3 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:* Versions before 14.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:14.0:*:*:*:*:*:*:* Versions 14.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:14su1:*:*:*:*:*:*:* Versions 14su1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:14su2:*:*:*:*:*:*:* Versions 14su2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:14su3:*:*:*:*:*:*:* Versions 14su3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:14su4:*:*:*:*:*:*:* Versions 14su4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:15.0:*:*:*:*:*:*:* Versions 15.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:15su1:*:*:*:*:*:*:* Versions 15su1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:15su2:*:*:*:*:*:*:* Versions 15su2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:unity_connection:15su3:*:*:*:*:*:*:* Versions 15su3 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-20035
- 2026-10-03 Alias added: GHSA-w7jh-xmq5-2m7v
References
Advisory 1
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-2026-20035 · CVE Program
- CVE-2026-20035 · NVD
- FIRST EPSS
- GHSA-w7jh-xmq5-2m7v · GitHub Advisory Database · CC BY 4.0
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