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CVE-2021-44747

22
FAUCET Score

CVE-2021-44747 is a Denial-of-Service (DoS) vulnerability in the Fmlib component of F-Secure Linux Security and other F-Secure products, allowing remote attackers to crash the Anti-Virus engine by scanning fuzzed files. With a CVSS score of 6.5 (Medium), it requires no privileges but user interaction to trigger, leading to high availability impact. There is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage, suggesting a low immediate threat.

Impacted Technologies

VendorProductVersion(s)CPE
< 2022-02-23_01CPE matchmatch criteria
cpe:2.3:a:f-secure:atlant:*:*:*:*:*:*:*:*
< 2022-02-23_01CPE matchmatch criteria
cpe:2.3:a:f-secure:elements_endpoint_protection:*:*:*:*:*:mac:*:*
<= 2022-02-23_01CPE matchmatch criteria
cpe:2.3:a:f-secure:internet_gatekeeper:*:*:*:*:*:*:*:*
< 2022-02-23_01CPE matchmatch criteria
cpe:2.3:a:f-secure:linux_security:*:*:*:*:*:*:*:*
< 2022-02-23_01CPE matchmatch criteria
cpe:2.3:a:f-secure:security_cloud:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.6MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.1
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 50th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

f-secure.com / en/business/support-and-downloads/security-advisories
Vendor Advisory