CVE-2023-43765
CVE-2023-43765 is a high-severity vulnerability in F-secure Linux Protection with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (41st percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: F-secure Linux Protection
- Published:
- Last modified:
Description
Certain WithSecure products allow Denial of Service in the aeelf component. 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.
Frequently asked questions
- What is CVE-2023-43765?
- Certain WithSecure products allow Denial of Service in the aeelf component. 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.
- How severe is CVE-2023-43765?
- CVE-2023-43765 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-43765 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-43765?
- CVE-2023-43765 primarily affects F-secure Linux Protection. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-43765?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-43765 published?
- CVE-2023-43765 was published on 2023-09-22 and last updated on 2026-06-17.
References
- https://www.withsecure.com/en/support/security-advisories
- https://www.withsecure.com/en/support/security-advisories/cve-2023-nnn2
Affected products (7)
- cpe:2.3:a:f-secure:linux_protection:12.0:*:*:*:*:*:*:*
- cpe:2.3:a:f-secure:linux_security_64:12.0:*:*:*:*:*:*:*
- cpe:2.3:a:f-secure:atlant:1.0.35-1:*:*:*:*:*:*:*
- cpe:2.3:a:f-secure:client_security:15.00:*:*:*:*:*:*:*
- cpe:2.3:a:f-secure:elements_endpoint_protection:*:*:*:*:*:*:*:*
- cpe:2.3:a:f-secure:email_and_server_security:15.00:*:*:*:*:*:*:*
- cpe:2.3:a:f-secure:server_security:15.00:*:*:*:*:*:*:*
More vulnerabilities in F-secure Linux Protection
- CVE-2023-43766 — High (CVSS 7.8): Certain WithSecure products allow Local privilege escalation via the lhz archive unpack handler. This affects…
- CVE-2023-49322 — High (CVSS 7.5): Certain WithSecure products allow a Denial of Service because there is an unpack handler crash that can lead to a…
- CVE-2023-43767 — High (CVSS 7.5): Certain WithSecure products allow Denial of Service via the aepack archive unpack handler. This affects WithSecure…
- CVE-2023-43761 — High (CVSS 7.5): Certain WithSecure products allow Denial of Service (infinite loop). This affects WithSecure Client Security 15,…
- CVE-2023-43760 — High (CVSS 7.5): Certain WithSecure products allow Denial of Service via a fuzzed PE32 file. This affects WithSecure Client Security 15,…
- CVE-2023-49321 — Medium (CVSS 5.3): Certain WithSecure products allow a Denial of Service because scanning a crafted file takes a long time, and causes the…