Vulnerability · Published Feb 9, 2022 · Assigned by F-SecureUS

CVE-2021-40837Denial-of-Service (DoS) Vulnerability

Medium 4.6

In plain English

A medium-severity security flaw in F-Secure 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 Security Cloud from F-Secure. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).

Severity (CVSS 3.1)4.6Medium

Exploit odds (30 days)0.7%top 48.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A vulnerability affecting F-Secure antivirus engine before Capricorn update 2022-02-01_01 was discovered whereby decompression of ACE file causes the scanner service to stop. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.

Affected products (as reported)

Vendor	Product	Versions
F-Secure	F-Secure 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 Security Cloud	All Version

References

https://www.f-secure.com/en/business/support-and-downloads/security-advisories x_refsource_MISC
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40837 x_refsource_MISC