CVE-2021-33603
A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the AVPACK module component used in certain F-Secure products can crash while scanning a fuzzed files.
Does this matter?
Lower severity and a low EPSS score (0.56%). Track it; it rarely justifies an emergency change on its own.
Description
A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the AVPACK module component used in certain F-Secure products can crash while scanning a fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service (DoS) of the Anti-Virus engine.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.56% probability · 47th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- f-secure/atlant · f-secure/cloud protection for salesforce · f-secure/elements for microsoft 365 · f-secure/internet gatekeeper · f-secure/linux security · f-secure/elements endpoint detection and response · f-secure/elements endpoint protection
- Source
- cve-notifications-us@f-secure.com
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameVendor Advisory
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33603Vendor Advisory
- https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameVendor Advisory
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33603Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.