HOMEVULNERABILITIESCVE-2021-33598
MEDIUM

CVE-2021-33598

NVD-CWE-noinfoPublished: August 23, 2021· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

A Denial-of-Service (DoS) vulnerability was discovered in all versions of F-Secure Atlant whereby the SAVAPI component used in certain F-Secure products can crash while scanning 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.

NVD Source

Technical Analysis

CVE-2021-33598 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Apple1 product(s)
macos
f-secure3 product(s)
atlantlinux securityelements endpoint protection
Microsoft1 product(s)
windows
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame
ADVISORYhttps://www.f-secure.com/en/business/support-and-downloads/security-advisories
ADVISORYhttps://www.f-secure.com/en/business/support-and-downloads/security-advisories/fsc-2021-33598
ADVISORYhttps://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame
ADVISORYhttps://www.f-secure.com/en/business/support-and-downloads/security-advisories
ADVISORYhttps://www.f-secure.com/en/business/support-and-downloads/security-advisories/fsc-2021-33598

All References (6)

→
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-advisoriesVendor Advisory
→
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/fsc-2021-33598Vendor 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-advisoriesVendor Advisory
→
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/fsc-2021-33598Vendor Advisory

Quick Facts

CVE IDCVE-2021-33598
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected3 vendor(s)
PublishedAug 23, 2021

Related CVEs (NVD-CWE-noinfo)

CVE-2017-6326
10.0
CVE-2012-1774
10.0
CVE-2009-1314
10.0
CVE-2008-6158
10.0
CVE-2008-4619
10.0
CVE-2008-0953
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-33598 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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