CVSS 3.1 Score 7.5 of 10 (high)


Published Sep 18, 2023
Updated: Sep 21, 2023
CWE ID 400


CVE-2023-42520 is a vulnerability that affects certain WithSecure products, including WithSecure Client Security 15, WithSecure Server Security 15, and WithSecure Email and Server Security 15. It also impacts WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, and WithSecure Elements Endpoint Protection for Mac 17 and later. Additionally, Linux Security 64 12.0, Linux Protection 12.0, and WithSecure Atlant (formerly F-Secure Atlant) 1.0.35-1 are affected as well. This vulnerability allows an attacker to remotely crash the scanning engine by unpacking crafted data files. The danger it poses to organizations is high, with a base severity rating of HIGH and an availability impact of HIGH according to NIST's National Vulnerability Database (NVD). The vulnerability has a base score of 7.5 out of 10 and an impact score of 3.6 out of 10. The exploitability score is rated at 3.9 out of 10. Remediation measures should be taken to address this vulnerability promptly in order to protect the affected systems from potential attacks exploiting this vulnerability.

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