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Vulnerability record · CVE-2021-44751 · published 25 March 2022

CVE-2021-44751: F-secure safe incorrect default permissions vulnerability

F Secure · Safe

A vulnerability affecting F-Secure SAFE browser was discovered. A maliciously crafted website attached with USSD code in JavaScript or iFrame can trigger dialer application from F-Secure browser which can be exploited by an attacker to send unwanted USSD messages or perform unwanted calls. In most modern Android OS, dialer application will require user interaction, however, some older Android OS may not need user interaction.

5.3 CVSS 3.1 Medium EPSS 0.58% · top 54.7% CWE-276 · Incorrect default permissions
5.3CVSS 3.1 base score, v2 5.0
0.58%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 was discovered. A maliciously crafted website attached with USSD code in JavaScript or iFrame can trigger dialer application from F-Secure browser which can be exploited by an attacker to send unwanted USSD messages or perform unwanted calls. In most modern Android OS, dialer application will require user interaction, however, some older Android OS may not need user interaction.

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

Affected products

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

References

LinkTags
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame Not Applicable
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame Not Applicable

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Related vulnerabilities

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

9.6CVE-2021-44749F-secure safe cross-site scripting vulnerabilityA vulnerability affecting F-Secure SAFE browser protection was discovered improper URL handling can be triggered to cause universal cross-site script…EPSS 0.82%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%

Source: NIST National Vulnerability Database (record CVE-2021-44751), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.