What is CVE-2021-33595?

CVE-2021-33595 is a low-severity vulnerability in F-Secure Mobile Security. CVSS score: 3.5/10. Published 2021-08-11.

How severe is CVE-2021-33595?

Low severity. CVSS v3 base score is 3.5 out of 10.

Is CVE-2021-33595 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in F-Secure Mobile Security

CVE-2021-33595

A address bar spoofing vulnerability was discovered in Safe Browser for iOS. Showing the legitimate URL in the address bar while loading the content from other domain. This makes the user believe that the content is served by a legit domain. A remote attacker can leverage this to perform address bar spoofing attack.

Published 2021-08-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.011 (65.0th percentile), scored 2026-10-31.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

F-Secure Mobile Security — versions 18.4x
F-Secure Safe

Public proof-of-concept exploits

n0-traces/cve_

References

www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame (Vendor Advisory)
www.f-secure.com/en/business/support-and-downloads/security-advisories (Vendor Advisory)
www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-33595?: CVE-2021-33595 is a low-severity vulnerability in F-Secure Mobile Security. CVSS score: 3.5/10. Published 2021-08-11.
How severe is CVE-2021-33595?: Low severity. CVSS v3 base score is 3.5 out of 10.
Is CVE-2021-33595 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.