An issue in CatoNetworks CatoClient before v.5.4.0 allows attackers to escalate…
Priority HIGH 70CWE-367Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An issue in CatoNetworks CatoClient before v.5.4.0 allows attackers to escalate privileges and winning the race condition (TOCTOU) via the PrivilegedHelperTool component.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00628 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:catonetworks:cato_client:*:*:*:*:*:macos:*:* | before 5.4.0 | Vulnerable | Cato Networks |
- cpe:2.3:a:catonetworks:cato_client:*:*:*:*:*:macos:*:* Versions before 5.4.0 Vulnerable ·Cato Networks
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-43976
- 2026-10-03 Alias added: GHSA-95w2-vgp5-32g4
- 2026-10-29 EPSS moved to the 50th–90th percentile
References
More Cato Networks Cato Client vulnerabilities
- TI-2024-06472 Improper input validation in Cato Networks SDP Client CVSS 3.1HIGH 8.8
- TI-2024-06474 Untrusted search path in Cato Networks SDP Client CVSS 3.1HIGH 8.8
- TI-2024-06473 Incorrect default permissions in Cato Networks SDP Client CVSS 3.1HIGH 8.8
- TI-2024-06476 Improper input validation in Cato Networks SDP Client CVSS 3.1HIGH 8.8
- TI-2024-06475 Cato Networks Windows SDP Client Sensitive data in trace logs can lead to account takeover CVSS 3.1MEDIUM 6.5
- TI-2025-03433 CatoNetworks CatoClient up to 5.8 PrivilegedHelperTool Race Condition CVSS 4.0MEDIUM 5.7
Sources
- CVE-2023-43976 · CVE Program
- CVE-2023-43976 · NVD
- FIRST EPSS
- GHSA-95w2-vgp5-32g4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences