Cisco Secure Client Secure Firewall Posture Module Privilege Escalation (cisco-sa-sec-client-priv-esc-muF8eZdm)

medium Nessus Plugin ID 371348

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco Secure Client is affected by a vulnerability.

- 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. The Security Impact Rating (SIR) of this advisory has been raised to High because the vulnerability could be used to obtain full root privileges on macOS and Linux. (CVE-2026-76462)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwu48192

Plugin Details

Severity: Medium

ID: 371348

File Name: cisco-sa-sec-client-priv-esc-muF8eZdm.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: CISCO

Published: 10/23/2026

Updated: 10/23/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:N

CVSS Score Source: CVE-2026-76462

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Vulnerability Information

CPE: cpe:/a:cisco:anyconnect_secure_mobility_client, cpe:/a:cisco:secure_client

Required KB Items: installed_sw/Cisco AnyConnect Secure Mobility Client

Patch Publication Date: 10/21/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-76462

CWE: 20

CISCO-SA: cisco-sa-sec-client-priv-esc-muF8eZdm

IAVA: 2026-A-1199

CISCO-BUG-ID: CSCwu48192

Detections

Analytics