Medium severity4.3NVD Advisory· Published Dec 10, 2021· Updated Jun 17, 2026

CVE-2021-40834

Description

A user interface overlay vulnerability was discovered in F-secure SAFE Browser for Android. When user click on a specially crafted seemingly legitimate URL SAFE browser goes into full screen and hides the user interface. A remote attacker can leverage this to perform spoofing attack.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

F-Secure/SAFE
cpe:2.3:a:f-secure:safe:*:*:*:*:*:android:*:*
Range: <=17.9
F-Secure/Safe Browser for Androidllm-fuzzy
F-Secure/F Secure Mobile Security For Series 80cpe-rescue
Range: 18.5x

Patches

Vulnerability mechanics

References

www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-famenvdVendor Advisory
www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40834nvdVendor Advisory

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