SB20260816148 - MitM attack in GlobalProtect App
Published: August 16, 2026
Security Bulletin ID
SB20260816148
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Certificate Validation (CVE-ID: CVE-2026-0296)
CWE-ID: CWE-295 - Improper Certificate Validation
CVSSv4: 8.4 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to intercept and modify application communications.
The vulnerability exists due to improper certificate validation in the GlobalProtect App for Linux when establishing application communications over an adjacent network. A remote attacker can perform a man-in-the-middle attack to intercept and modify application communications.
VPN tunnel traffic is not impacted.
Remediation
Install update from vendor's website.