Incorrect Privilege Assignment in Cisco Terminal Services Agent - CVE-2026-20028
Published: August 10, 2026
Vulnerability identifier: #VU141380
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20028
CWE-ID: CWE-266
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass firewall rules.
The vulnerability exists due to an incorrect mapping of network connections to user accounts. A remote user can inherit the firewall rules associated with a different user in the system.
Affected software
Cisco Terminal Services Agent
How to mitigate CVE-2026-20028
Install updates from vendor's website.
Cisco Terminal Services Agent - update to 1.4.3