← Vulnerability feed

Vulnerability record · CVE-2021-44749 · published 6 March 2022

CVE-2021-44749: F-secure safe cross-site scripting vulnerability

F Secure · Safe

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.

9.6 CVSS 3.1 Critical EPSS 0.82% · top 44.6% CWE-79 · Cross-site scripting
9.6CVSS 3.1 base score, v2 4.3
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-44749 Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-44749 Vendor Advisory

Track CVE-2021-44749 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2022-28872F-secure safe vulnerabilityA vulnerability affecting F-Secure SAFE browser was discovered. A maliciously crafted website could make a phishing attack with address bar spoofing …EPSS 0.49%8.1CVE-2020-14977F-secure safe vulnerabilityAn issue was discovered in F-Secure SAFE 17.7 on macOS. The XPC services use the PID to identify the connecting client, which allows an attacker to p…EPSS 2.8%8.1CVE-2020-14978F-secure safe vulnerabilityAn issue was discovered in F-Secure SAFE 17.7 on macOS. Due to incorrect client version verification, an attacker can connect to a privileged XPC ser…EPSS 3.1%7.8CVE-2019-11644F-secure client security uncontrolled search path element vulnerabilityIn the F-Secure installer in F-Secure SAFE for Windows before 17.6, F-Secure Internet Security before 17.6, F-Secure Anti-Virus before 17.6, F-Secure…EPSS 1.5%6.5CVE-2022-38164F-secure safe authentication bypass by spoofing vulnerabilityA vulnerability affecting F-Secure SAFE browser for Android and iOS was discovered. A maliciously crafted website could make a phishing attack with U…EPSS 0.47%6.1CVE-2021-44748F-secure safe cross-site scripting vulnerabilityA vulnerability affecting F-Secure SAFE browser was discovered whereby browsers loads images automatically this vulnerability can be exploited remote…EPSS 0.55%5.4CVE-2022-47524F-secure safe vulnerabilityF-Secure SAFE Browser 19.1 before 19.2 for Android allows an IDN homograph attack.EPSS 0.35%5.3CVE-2021-44751F-secure safe incorrect default permissions vulnerabilityA vulnerability affecting F-Secure SAFE browser was discovered. A maliciously crafted website attached with USSD code in JavaScript or iFrame can tri…EPSS 0.58%

Source: NIST National Vulnerability Database (record CVE-2021-44749), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.