CVE-2026-19377
Severity not reportedData quality: partial.
Some fields were not provided by the source.
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…
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.
CVSS
—
Not reported by the source
Timeline (UTC)
Published: 2026-10-15 07:17
Modified: 2026-10-16 20:04
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 07:03 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://knowledge.catonetworks.com/docs/security-vulnerability-cve-2026-19377-that-impacts... 2505284f-8ffb-486c-bf60-e19c1097a90b
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:03 UTC · record ↗