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TI-2021-12977 Aliases CVE-2021-33594GHSA-w9rw-g2g4-x27x

F-Secure Safe browser for Android vulnerable to Address Bar Spoofing

Priority LOW 19Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

An address bar spoofing vulnerability was discovered in Safe Browser for Android. When user clicks on a specially crafted a malicious URL, it appears like a legitimate one on the address bar, while the content comes from other domain and presented in a window, covering the original content. A remote attacker can leverage this to perform address bar spoofing attack.

Why it matters now

EPSS 0.01075 65th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
F-SecureF-Secure Mobile Security18.4x and later—No fix listedCNA
  • F-Secure Mobile Security VendorF-Secure Affected 18.4x and later Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:f-secure:safe:*:*:*:*:*:android:*:*before 18.4.0VulnerableF-Secure
  • cpe:2.3:a:f-secure:safe:*:*:*:*:*:android:*:* Versions before 18.4.0 Vulnerable ·F-Secure

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    F-Secure Mobile Security 18.3x*

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2021-12978 F-Secure Safe browser for iOS vulnerable to Address Bar SpoofingPriority LOW 19
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33594
  2. 2026-10-03 Alias added: GHSA-w9rw-g2g4-x27x

References

Advisory 3

  • TI-2021-20261 Universal Cross-Site Scripting Vulnerability in F-Secure SAFE Browser Protection for Android CVSS 3.1CRITICAL 9.6
  • TI-2020-11780 An issue was discovered in F-Secure SAFE 17.7 on macOS. CVSS 3.1HIGH 8.1
  • TI-2020-11779 An issue was discovered in F-Secure SAFE 17.7 on macOS. CVSS 3.1HIGH 8.1
  • TI-2022-11493 Address Bar Spoofing Vulnerability in F-Secure SAFE Browser for Android CVSS 3.1HIGH 8.8
  • TI-2019-08714 In the F-Secure installer in F-Secure SAFE for Windows before 17.6, F-Secure Internet… CVSS 3.0HIGH 7.8
  • TI-2022-17862 A vulnerability affecting F-Secure SAFE browser for Android and iOS was discovered. CVSS 3.1MEDIUM 6.5
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences