Cato Windows SDP Client arbitrary file disclosure due to improper TLS certificate validation

published 2026-09-30 40 d ago modified 2026-09-30 39 d ago also EUVD-2026-89780

cvss: 6.8; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 0%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Cato Networks SDP Client 6.12.6

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 40 d ago (2026-09-30)

Exploit prediction

0.06% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
CNA	4.0	6.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/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

Affected products

Cato Networks SDP Client

Classification

Weakness

CWE-295 Improper Certificate Validation
CWE-73 External Control of File Name or Path

References

knowledge.catonetworks.com /docs/cve-2026-10726-cve-2026-10739-impacts-windows-client-versions-lower-than-6126

Sources

CVE List CVE-2026-10726
NVD CVE-2026-10726

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Summary