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TI-2026-16291 Aliases CVE-2026-20078GHSA-q6x9-g748-283m

Cisco Unity Connection Arbitrary File Download Vulnerability

Priority LOW 29CWE-23Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-23 and the CVSS impact.

Summary

Multiple vulnerabilities in Cisco Unity Connection could allow an authenticated, remote attacker to download arbitrary files from an affected system. To exploit these vulnerabilities, the attacker must have valid administrative credentials.  These vulnerabilities are due to improper sanitization of user input to the web-based management interface. An attacker could exploit these vulnerabilities by sending a crafted HTTPS request. A successful exploit could allow the attacker to download arbitrary files from an affected system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00388 33rd 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

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Unity Connection12.5(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; 14SU5—No fix listedCNA
  • 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; 14SU5 Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*up to 12.5VulnerableCisco
cpe:2.3:a:cisco:unity_connection:14.0:*:*:*:*:*:*:*14.0VulnerableCisco
cpe:2.3:a:cisco:unity_connection:14su1:*:*:*:*:*:*:*14su1VulnerableCisco
cpe:2.3:a:cisco:unity_connection:14su2:*:*:*:*:*:*:*14su2VulnerableCisco
cpe:2.3:a:cisco:unity_connection:14su3:*:*:*:*:*:*:*14su3VulnerableCisco
cpe:2.3:a:cisco:unity_connection:14su3a:*:*:*:*:*:*:*14su3aVulnerableCisco
cpe:2.3:a:cisco:unity_connection:14su4:*:*:*:*:*:*:*14su4VulnerableCisco
cpe:2.3:a:cisco:unity_connection:14su5:*:*:*:*:*:*:*14su5VulnerableCisco
cpe:2.3:a:cisco:unity_connection:15.0:*:*:*:*:*:*:*15.0VulnerableCisco
cpe:2.3:a:cisco:unity_connection:15su1:*:*:*:*:*:*:*15su1VulnerableCisco
  • cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:* Versions up to 12.5 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:14su3a:*:*:*:*:*:*:* Versions 14su3a Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unity_connection:14su4:*:*:*:*:*:*:* Versions 14su4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unity_connection:14su5:*:*:*:*:*:*:* Versions 14su5 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
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:unity_connection:15su2:*:*:*:*:*:*:*15su2VulnerableCisco
cpe:2.3:a:cisco:unity_connection:15su3:*:*:*:*:*:*:*15su3VulnerableCisco
  • 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

  1. 2026-10-02 Threatist record created from CVE-2026-20078
  2. 2026-10-03 Alias added: GHSA-q6x9-g748-283m

References

Advisory 1

  • 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
See all 64 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences