CVE-2025-5020CWE-939

CVE-2025-5020

Medium · published May 21, 2025

CVSS v3.1
4.3
EPSS
0%
Percentile
13.7
In the wild
Unconfirmed
What it is

Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client. This vulnerability was fixed in Firefox for iOS 139.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00235 · 13.7th percentile
Weakness
CWE-939 · Improper Authorization in Handler for Custom URL Scheme
Published
2025-05-21T22:15Z
Affected products (1)
ProductVersionsFixed in
mozilla/firefox< 139.0139.0
References (2)
https://bugzilla.mozilla.org/show_bug.cgi?id=1951558 · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-39/ · [email protected]
EPSS history
Timeline
  • 21 MAY 17:18Z
    Links using non-HTTP schemes opened from other apps such as Safari could have allowed spoofing of website addresses
    cvelistv5