Medium severity · published Dec 10, 2021
CVE-2021-40834
A user interface overlay vulnerability was discovered in F-secure SAFE Browser for Android
4.3
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Safe · F-secure
through 17.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40834
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40834
Vendor Advisory
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame
Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40834
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