What’s Vulnerable › Vulnerabilities

CVE-2021-44749: Universal Cross-Site Scripting Vulnerability in F-Secure SAFE Browser Protection for Android

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-06 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• F-Secure SAFE Browser for Android Version 18.5: 18.5

References

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

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