Description
Unicode RTLO characters could allow malicious websites to spoof filenames in the downloads UI for Firefox for iOS, potentially tricking users into saving files of an unexpected file type. This vulnerability was fixed in Firefox for iOS 144.0.
References (2)
Core 2
Core References
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1984683
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-97/
Scores
CVSS v3
6.5
EPSS
0.0017
EPSS Percentile
6.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-451
Status
published
Products (2)
mozilla/firefox
< 144.0
Mozilla/Firefox for iOS
144.0
Published
Dec 18, 2025
Tracked Since
Feb 18, 2026