Cisco Secure Client Privilege Escalation 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. 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.
CVE-2026-76462
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-76462
Cisco Secure Client
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Cisco",
"product": "Cisco Secure Client",
"versions": [
{
"status": "affected",
"version": "4.9.00086"
},
{
"status": "affected",
"version": "4.9.01095"
},
{
"status": "affected",
"version": "4.9.02028"
},
{
"status": "affected",
"version": "4.9.03047"
},
{
"status": "affected",
"version": "4.9.03049"
},
{
"status": "affected",
"version": "4.9.04043"
},
{
"status": "affected",
"version": "4.9.04053"
},
{
"status": "affected",
"version": "4.9.05042"
},
{
"status": "affected",
"version": "4.9.06037"
},
{
"status": "affected",
"version": "4.10.00093"
},
{
"status": "affected",
"version": "4.10.01075"
},
{
"status": "affected",
"version": "4.10.02086"
},
{
"status": "affected",
"version": "4.10.03104"
},
{
"status": "affected",
"version": "4.10.04065"
},
{
"status": "affected",
"version": "4.10.04071"
},
{
"status": "affected",
"version": "4.10.05085"
},
{
"status": "affected",
"version": "4.10.05095"
},
{
"status": "affected",
"version": "5.0.00238"
},
{
"status": "affected",
"version": "4.10.05111"
},
{
"status": "affected",
"version": "5.0.00529"
},
{
"status": "affected",
"version": "5.0.00556"
},
{
"status": "affected",
"version": "4.10.06079"
},
{
"status": "affected",
"version": "5.0.01242"
},
{
"status": "affected",
"version": "4.10.06090"
},
{
"status": "affected",
"version": "5.0.02075"
},
{
"status": "affected",
"version": "4.10.07061"
},
{
"status": "affected",
"version": "5.0.03072"
},
{
"status": "affected",
"version": "4.10.07062"
},
{
"status": "affected",
"version": "5.0.03076"
},
{
"status": "affected",
"version": "5.0.04032"
},
{
"status": "affected",
"version": "4.10.07073"
},
{
"status": "affected",
"version": "5.0.05040"
},
{
"status": "affected",
"version": "5.1.0.136"
},
{
"status": "affected",
"version": "5.1.1.42"
},
{
"status": "affected",
"version": "4.10.08025"
},
{
"status": "affected",
"version": "5.1.2.42"
},
{
"status": "affected",
"version": "4.10.08029"
},
{
"status": "affected",
"version": "5.1.3.62"
},
{
"status": "affected",
"version": "5.1.4.74"
},
{
"status": "affected",
"version": "5.1.5.65"
},
{
"status": "affected",
"version": "5.1.6.103"
},
{
"status": "affected",
"version": "5.1.7.80"
},
{
"status": "affected",
"version": "5.1.8.105"
},
{
"status": "affected",
"version": "5.1.8.122"
},
{
"status": "affected",
"version": "5.1.9.113"
},
{
"status": "affected",
"version": "5.1.10.233"
},
{
"status": "affected",
"version": "5.1.11.388"
},
{
"status": "affected",
"version": "5.1.12.146"
},
{
"status": "affected",
"version": "5.1.13.117"
},
{
"status": "affected",
"version": "5.1.13.177"
},
{
"status": "affected",
"version": "5.1.14.145"
},
{
"status": "affected",
"version": "5.1.15.287"
},
{
"status": "affected",
"version": "5.1.16.194"
},
{
"status": "affected",
"version": "5.1.17.3382"
},
{
"status": "affected",
"version": "5.1.17.3394"
},
{
"status": "affected",
"version": "5.1.18.314"
},
{
"status": "affected",
"version": "5.1.19.1862"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-76462
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #52509 · Revision 1
- Added to Heist Feed
- Publisher date