Strix
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CVE-2021-40833

MEDIUMCVSS 5.5/10EPSS 0.39%

Last modified

CVE-2021-40833 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability affecting F-Secure antivirus engine was discovered whereby unpacking UPX file can lead to denial-of-service. The vulnerability can be exploited remotely by an attacker. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

A vulnerability affecting F-Secure antivirus engine was discovered whereby unpacking UPX file can lead to denial-of-service. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.

Metrics

CVSS 3.1
5.5/10

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

EPSS Probability
0.39%

31.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
F-SecureAtlantAll versions
F-SecureInternet GatekeeperAll versions
F-SecureLinux SecurityAll versions
F-SecureLinux Security 64All versions
F-SecureElements Endpoint ProtectionAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-40833?
A vulnerability affecting F-Secure antivirus engine was discovered whereby unpacking UPX file can lead to denial-of-service. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.
How severe is CVE-2021-40833?
CVE-2021-40833 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40833?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40833?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST