CVE-2023-43976

Name: CVE-2023-43976
Creator: NVD / NIST
Published: 2023-10-03T19:15:09.677+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2023-43976 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.53%

40.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-367

Affected Software

Vendor	Product	Versions
Catonetworks	Cato Client	< 5.4.0

References

https://www.catonetworks.comProduct
https://www.ns-echo.com/posts/cve_2023_43976.htmlExploit
https://www.catonetworks.comProduct
https://www.ns-echo.com/posts/cve_2023_43976.htmlExploit

Timeline

Published: Oct 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-43976?

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.

How severe is CVE-2023-43976?

CVE-2023-43976 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2023-43976?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-43976?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST