Is CVE-2021-44749 actively exploited?

No active exploitation of CVE-2021-44749 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-44749 be exploited remotely?

Yes. CVE-2021-44749 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-44749?

CVE-2021-44749 has a CVSS score of 9.6 (CRITICAL).

HOME VULNERABILITIESCVE-2021-44749

CRITICAL

CVE-2021-44749

CWE-79Published: March 6, 2022· Updated: Jun 17, 2026

9.6

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-44749 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.