Improper Certificate Validation in Gaia - CVE-2026-50752
Published: June 9, 2026
Vulnerability identifier: #VU134001
CSH Severity: Medium
CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-50752
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to conduct a man-in-the-middle attack.
The vulnerability exists due to improper certificate validation in the IKEv1 key exchange certificate validation logic when establishing a VPN site-to-site connection using certificate-based authentication. A remote attacker can present a crafted certificate to conduct a man-in-the-middle attack.
The issue applies only to VPN site-to-site configurations that use IKEv1 with certificate-based authentication, and does not affect pre-shared key authentication, Dynamic IP gateways, or Large Scale VPN communities.
Affected software
Gaia
How to mitigate CVE-2026-50752
Install security update from vendor's website.
Gaia - addressed in versions R81.20 Take 113.2, R81.20 Take 120.2, R81.20 Take 127.2, R81.20 Take 141.2, R82.10 Take 6.2, R82.10 Take 19.3, R82 Take 103.2