CVE-2023-43766

Certain WithSecure products allow Local privilege escalation via the lhz archive unpack handler. This affects WithSecure Client Security 15, WithSecure Server Security 15, WithSecure Email and Server Security 15, WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, WithSecure Elements Endpoint Protection for Mac 17 and later, Linux Security 64 12.0 , Linux Protection 12.0, and WithSecure Atlant (formerly F-Secure Atlant) 1.0.35-1.

Published: 2023-09-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-43766 is rated Low Risk (33.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.04%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-43766

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2023-09-22 — 0.04% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-43766

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2023-43766

Affected software / configurations for CVE-2023-43766

Vendor Product Version Raw CPE
f-secure linux_protection 12.0 cpe:2.3:a:f-secure:linux_protection:12.0:*:*:*:*:*:*:*
f-secure linux_security_64 12.0 cpe:2.3:a:f-secure:linux_security_64:12.0:*:*:*:*:*:*:*
f-secure atlant 1.0.35-1 cpe:2.3:a:f-secure:atlant:1.0.35-1:*:*:*:*:*:*:*
f-secure client_security 15.00 cpe:2.3:a:f-secure:client_security:15.00:*:*:*:*:*:*:*
f-secure elements_endpoint_protection >= 17.0 cpe:2.3:a:f-secure:elements_endpoint_protection:*:*:*:*:*:*:*:*
f-secure email_and_server_security 15.00 cpe:2.3:a:f-secure:email_and_server_security:15.00:*:*:*:*:*:*:*
f-secure server_security 15.00 cpe:2.3:a:f-secure:server_security:15.00:*:*:*:*:*:*:*

References for CVE-2023-43766

cvelogic Threat Intelligence