CVE-2025-3033 — External Control of File Name or Path in Mozilla Firefox

CWE-73 — External Control of File Name or Path7 documents6 sources
Severity
7.7HIGHNVD
EPSS
0.1%
top 77.16%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedApr 1

Description

After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 137 and Thunderbird 137.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitability: 2.5 | Impact: 5.2

Affected Packages2 packages

▶NVDmozilla/firefox< 137.0
▶NVDmozilla/thunderbird< 137.0

🔴Vulnerability Details

3
CVEList
Opening local .url files could lead to another file being opened↗2025-04-01
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GHSA
GHSA-57xv-4vp5-7v49: After selecting a malicious Windows `↗2025-04-01
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OSV
CVE-2025-3033: After selecting a malicious Windows `↗2025-04-01
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📋Vendor Advisories

3
Debian
CVE-2025-3033: firefox - After selecting a malicious Windows `.url` shortcut from the local filesystem, a...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-23: CVE-2025-3033↗
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Mozilla
Mozilla Foundation Security Advisory 2025-20: CVE-2025-3033↗
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CVE-2025-3033 — External Control of File Name or Path | cvebase