# CVE-2026-10726: Cato Windows SDP Client arbitrary file disclosure due to improper TLS certificate validation

CVE-2026-10726 is fixed in Cato Client on 1 platform by Cato Client 6.12.6.9050 (version 6.12.6.9050), released August 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-10726
- Priority: Routine
- CVSS: 6.8
- EPSS: 0.0006
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 30, 2026
- Weakness: CWE-295: Improper certificate validation
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-10726

## Description

Cato Windows SDP Client before version 6.12.6 contains an arbitrary file disclosure vulnerability. A low-privileged local user can cause the Windows service, running as Local System, to read and disclose arbitrary local files due to improper file path validation and missing TLS certificate enforcement.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Cato Client | 6.12.6.9050 | [Cato Client 6.12.6.9050](https://patchblox.com/security/data/fix/windows-app/catonetworks.catoclient-6.12.6.9050.md) | Aug 16, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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