Denial-of-Service (DoS) Vulnerability

More information

A denial-of-service (DoS) vulnerability was discovered in F-Secure Atlant whereby the fsicapd component used in certain WithSecure products while scanning larger packages/fuzzed files consume too much memory eventually can crash the scanning engine. The exploit can be triggered remotely by an attacker. 

This issue was reported to WithSecure through the Vulnerability Reward Program. No known exploit or attack has been seen in the wild.


WithSecure Corporation would like to thank Antti Levomäki and Christian Jalio from Forcepoint for bringing this issue to our attention.

Antti Levomäki


Christian Jalio



  • Fixed
  • Action required

  • No user action is required.
  • Risk level

  • Medium
  • Fix

  • The required fix has been published through automatic update channel with HydraLinux update 2022-04-12_01.
  • Affected products

  • All WithSecure Endpoint Protection products on Windows and Mac, F-Secure Linux Security (32-bit), F-Secure Linux Security 64, F-Secure Atlant, F-Secure Internet Gatekeeper, F-Secure Cloud Protection for Salesforce, F-Secure Elements for Microsoft 365
  • Platforms

  • All supported platforms for the affected products
  • Date issued

  • 2022-04-25
  • Security advisories
  • 2022
  • Medium