High severity · published Oct 3, 2023
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
8.1
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Cato Client · Catonetworks
before 5.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-43976
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-43976
Product
https://www.catonetworks.com
Exploit
https://www.ns-echo.com/posts/cve_2023_43976.html
More from Cato Client
8.8
CVE-2024-6978
Cato Networks Windows SDP Client Local root certificates can be installed by low-privileged users
8.8
CVE-2024-6975
Cato Networks Windows SDP Client Local Privilege Escalation via openssl configuration file
8.8
CVE-2024-6973
Remote Code Execution in Cato Windows SDP client via crafted URLs
8.1
CVE-2025-3886
CatoNetworks CatoClient up to 5.8 PrivilegedHelperTool Race Condition
7.8
CVE-2024-6974
Cato Networks Windows SDP Client Local Privilege Escalation via self-upgrade