{"id":"CVE-2021-33603","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-33603","generatedAt":"2026-10-27T22:28:01.332Z","title":"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.","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.","published":"2021-10-08T10:15:08.000Z","lastModified":"2026-06-17T03:54:52.000Z","status":"Modified","sourceIdentifier":"cve-notifications-us@f-secure.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":[],"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"],"epss":{"score":0.00563,"percentile":0.46577,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.56%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame","tags":["Vendor Advisory"],"source":"cve-notifications-us@f-secure.com"},{"url":"https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33603","tags":["Vendor Advisory"],"source":"cve-notifications-us@f-secure.com"},{"url":"https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33603","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-33603","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}