CVE-2026-76462 Cisco Secure Client Privilege Escalation Vulnerability
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-76462?
CVE-2026-76462 is a medium-severity vulnerability in Cisco Secure Client, published on 21 Oct 2026.
Official description
A vulnerability in the interprocess communication (IPC) channel of the Secure Firewall Posture module in Cisco Secure Client could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a series of crafted IPC messages to a local socket. A successful exploit could allow the attacker to perform limited file write operations on the filesystem with SYSTEM or root privileges. Although this vulnerability affects the Secure Firewall Posture module in Cisco Secure Client on Windows, macOS, and Linux operating systems, this vulnerability could be used to obtain full root privileges on macOS and Linux. For that reason Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates.
Weakness: CWE-20
Which versions are affected by CVE-2026-76462?
How do I fix CVE-2026-76462?
No fix has been published for CVE-2026-76462 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76462 being exploited?
There is no known exploitation of CVE-2026-76462 in the wild and no public exploit code.
Sources
Also known as GHSA-5f4j-pf3p-wcgw.