TI-2023-06796 Aliases CVE-2023-20088 GHSA-6v2h-cxg9-wpjg

Cisco Finesse Reverse Proxy VPN-less Access to Finesse Desktop Denial of Service Vulnerability

MEDIUM 40CWE-285Published 2023-03-03 · Updated 2024-10-28

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-285.

Summary

A vulnerability in the nginx configurations that are provided as part of the VPN-less reverse proxy for Cisco Finesse could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition for new and existing users who are connected through a load balancer. This vulnerability is due to improper IP address filtering by the reverse proxy. An attacker could exploit this vulnerability by sending a series of unauthenticated requests to the reverse proxy. A successful exploit could allow the attacker to cause all current traffic and subsequent requests to the reverse proxy through a load balancer to be dropped, resulting in a DoS condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00795 56th 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: Yes
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 Unified Contact Center Enterprise	all versions	—	No fix listed	CNA

Cisco Unified Contact Center Enterprise VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:finesse::::::::	before 12.6\(1\)	Vulnerable	Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):-::::::	12.6(1)	Vulnerable	Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):es01::::::	12.6(1) es01	Vulnerable	Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):es02::::::	12.6(1) es02	Vulnerable	Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):es03::::::	12.6(1) es03	Vulnerable	Cisco

cpe:2.3:a:cisco:finesse:*:*:*:*:*:*:*:* Versions before 12.6\(1\) Vulnerable ·Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):-:*:*:*:*:*:* Versions 12.6(1) Vulnerable ·Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):es01:*:*:*:*:*:* Versions 12.6(1) es01 Vulnerable ·Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):es02:*:*:*:*:*:* Versions 12.6(1) es02 Vulnerable ·Cisco
cpe:2.3:a:cisco:finesse:12.6\(1\):es03:*:*:*:*:*:* Versions 12.6(1) es03 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-20088
2026-10-03 Alias added: GHSA-6v2h-cxg9-wpjg

References

Advisory 1

20230301 Cisco Finesse Reverse Proxy VPN-less Access to Finesse Desktop Denial of Service Vulnerability

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-2018-00358 Access control flaw in Cisco Finesse unknown CVSS 3.0CRITICAL 9.8
TI-2018-00357 Access control flaw in Cisco Finesse unknown CVSS 3.0CRITICAL 9.8
TI-2024-13337 Server-side request forgery in Cisco Unified Contact Center Enterprise CVSS 3.1HIGH 7.2
TI-2017-09109 Improper authentication in Cisco Voice Operating System CVSS 3.0CRITICAL 9.8
TI-2017-04533 Resource management flaw in Multiple Cisco Products unknown CVSS 3.0HIGH 7.5

See all 24 →

Sources

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