VULNERABILITY INTELLIGENCE
CVE-2021-40835
CVSS score4.6 MEDIUM
EPSS probability0.73%
CISA KEVNot currently listed
Published2021-12-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Description
An URL Address bar spoofing vulnerability was discovered in Safe Browser for iOS. When user clicks on a specially crafted a malicious URL, if user does not carefully pay attention to url, user may be tricked to think content may be coming from a valid domain, while it comes from another. This is performed by using a very long username part of the url so that user cannot see the domain name. A remote attacker can leverage this to perform url address bar spoofing attack. The fix is, browser no longer shows the user name part in address bar.
Weakness classification
- nvd@nist.gov: NVD-CWE-Other
Primary references
- cve-notifications-us@f-secure.com — Vendor Advisory
- cve-notifications-us@f-secure.com — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory