CVE-2025-14744 Filename spoofing via Unicode Right-to-Left Override in Firefox for iOS

What is CVE-2025-14744?

CVE-2025-14744 is a medium-severity vulnerability in Mozilla Firefox, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-451

Which versions are affected by CVE-2025-14744?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2025-14744?

No fix has been published for CVE-2025-14744 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-14744 being exploited?

There is no known exploitation of CVE-2025-14744 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-w3cw-f63h-9g34.