CVE-2021-33596 json
Fake Apple login prompt in F-Secure SAFE browser for iOS
published 2021-08-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20280
- cvss
- 3.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- F-Secure F-Secure Mobile Security 18.4x
Exploit prediction
0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| NVD | 3.1 | 4.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- F-Secure F-Secure Mobile Security
Classification
- Weakness
-
- CWE-1021 Improper Restriction of Rendered UI Layers or Frames
References
Sources
- CVE List CVE-2021-33596
- NVD CVE-2021-33596
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