#VU106364 Link following in Mozilla Firefox - CVE-2025-3033

Vulnerability identifier: #VU106364

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-3033

CWE-ID: CWE-59

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists in the way Firefox handles Windows .url shortcuts. A remote attacker can trick the victim into clicking on a specially crafted shortcut and force the browser to open another file.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 130.0 - 136.0.4

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External links
https://bugzilla.mozilla.org/show_bug.cgi?id=1950056
https://www.mozilla.org/security/advisories/mfsa2025-20/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.