CVE-2021-33596
Exploiting the vulnerability requires the user to click on a specially crafted, seemingly legitimate URL containing an embedded malicious redirect while using F-Secure Safe Browser for iOS.
Does this matter?
Lower severity and a low EPSS score (0.80%). Track it; it rarely justifies an emergency change on its own.
Description
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. Exploiting the vulnerability requires the user to click on a specially crafted, seemingly legitimate URL containing an embedded malicious redirect while using F-Secure Safe Browser for iOS.
- CVSS 3.1
- 4.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
- EPSS
- 0.80% probability · 56th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1021
- Affected
- f-secure/safe
- Source
- cve-notifications-us@f-secure.com
EPSS 0.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameVendor Advisory
- https://www.f-secure.com/en/business/support-and-downloads/security-advisoriesVendor Advisory
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33596Vendor Advisory
- https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameVendor Advisory
- https://www.f-secure.com/en/business/support-and-downloads/security-advisoriesVendor Advisory
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33596Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.