Product · Cato Networks

Cato Client for Linux

1 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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Medium 6.0

CVE-2026-19377

Improper certificate validation in Cato Client tunnel handshake

Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic.

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Oct 15, 2026