CVE-2026-19377
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Cato Client for Windows
- Vendor
- Cato Networks
- Product
- Cato Client for Windows
- Platforms
- Windows
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | custom | 6.12.6 | Unavailable | None listed |
Cato Client for macOS
- Vendor
- Cato Networks
- Product
- Cato Client for macOS
- Platforms
- macOS
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | custom | 6.1.1 | Unavailable | None listed |
Cato Client for Linux
- Vendor
- Cato Networks
- Product
- Cato Client for Linux
- Platforms
- Linux
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | custom | 5.8.1 | Unavailable | None listed |
Cato Client for iOS
- Vendor
- Cato Networks
- Product
- Cato Client for iOS
- Platforms
- iOS
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | custom | 5.9 | Unavailable | None listed |
Cato Client for Android
- Vendor
- Cato Networks
- Product
- Cato Client for Android
- Platforms
- Android
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | custom | 5.6.2 | Unavailable | None listed |