CVE-2023-49321

Name: CVE-2023-49321
Creator: NVD / NIST
Published: 2023-11-27T00:15:07.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2023-49321 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Certain WithSecure products allow a Denial of Service because scanning a crafted file takes a long time, and causes the scanner to hang. 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, WithSecure Linux Security 64 12.0, WithSecure Linux Protection 12.0, and WithSecure Atlant 1.0.35-1.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

Certain WithSecure products allow a Denial of Service because scanning a crafted file takes a long time, and causes the scanner to hang. 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, WithSecure Linux Security 64 12.0, WithSecure Linux Protection 12.0, and WithSecure Atlant 1.0.35-1.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.61%

44.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
F-Secure	Linux Protection	12.0
F-Secure	Linux Security 64	12.0
F-Secure	Atlant	1.0.35-1
F-Secure	Client Security	15.00
F-Secure	Elements Endpoint Protection	>= 17.0
F-Secure	Email And Server Security	15.00
F-Secure	Server Security	15.00

References

https://www.withsecure.com/en/support/security-advisories/cve-2023-49321Vendor Advisory
https://www.withsecure.com/en/support/security-advisories/cve-2023-49321Vendor Advisory

Timeline

Published: Nov 27, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-49321?

How severe is CVE-2023-49321?

CVE-2023-49321 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2023-49321?

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-2023-49321?

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

Scan your code now

Source: NVD / NIST