CVE-2026-19377

MediumCVSS 6.0/10Last modified Oct 16, 2026

Description

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.

Metrics

CVSS 4.0 6.0/10

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-295

Affected software

No affected versions have been published.

Timeline

Published: Oct 15, 2026
Last modified: Oct 16, 2026
NVD status: Deferred

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