CVE-2025-14744
Unknown Unknown - Not Provided
Unicode RTLO Spoofing in Firefox for iOS Downloads UI

Publication date: 2025-12-18

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

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.
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Meta Information
Published
2025-12-18
Last Modified
2026-04-13
Generated
2026-06-16
AI Q&A
2025-12-18
EPSS Evaluated
2026-06-15
NVD
CVE-2025-14744
EUVD
EUVD-2025-204291
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox_for_ios 144.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-451 The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.
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Impact Analysis

The impact of this vulnerability is that users might be deceived into downloading and saving files that appear to be safe or of a certain type, but are actually different or potentially harmful. This could lead to inadvertent execution of malicious files or exposure to security risks. [1]

Executive Summary

This vulnerability involves the use of Unicode Right-to-Left Override (RTLO) characters by malicious websites to spoof filenames in the downloads user interface of Firefox for iOS. This means attackers can manipulate how filenames appear, potentially tricking users into saving files with misleading or unexpected file types. [1]

Detection Guidance

This vulnerability involves Unicode RTLO characters spoofing filenames in Firefox for iOS downloads UI. Detection would involve monitoring downloaded filenames for suspicious use of RTLO characters (Unicode U+202E). Since this is specific to Firefox for iOS and its downloads UI, there are no specific network commands provided to detect it. Users can manually inspect downloaded filenames for unexpected reversed text or unusual file extensions caused by RTLO characters. [1]

Mitigation Strategies

To mitigate this vulnerability, update Firefox for iOS to version 144.0 or later, which includes the fix preventing RTLO character misuse in filenames. Avoid downloading files from untrusted websites and be cautious of filenames that appear suspicious or have unexpected file extensions. [1]

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