CVE-2021-44749

Name: CVE-2021-44749
Creator: NVD / NIST
Published: 2022-03-06T20:15:07.997+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.77%

Last modified Jun 17, 2026

CVE-2021-44749 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. A vulnerability affecting F-Secure SAFE browser protection was discovered improper URL handling can be triggered to cause universal cross-site scripting through browsing protection in a SAFE web browser. User interaction is required prior to exploitation. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

A vulnerability affecting F-Secure SAFE browser protection was discovered improper URL handling can be triggered to cause universal cross-site scripting through browsing protection in a SAFE web browser. User interaction is required prior to exploitation. A successful exploitation may lead to arbitrary code execution.

Metrics

CVSS 3.1

9.6/10

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

EPSS Probability

0.77%

50.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
F-Secure	Safe	18.5

References

Timeline

Published: Mar 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44749?

How severe is CVE-2021-44749?

CVE-2021-44749 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44749?

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-2021-44749?

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

Scan your code now

Source: NVD / NIST