CVE-2025-5265
Potential local code execution in “Copy as cURL” command
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
Due to insufficient escaping of the ampersand character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. *This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2025 |
| Last Updated | Apr 13, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1962301 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-42/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-43/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-44/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-45/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-46/
Credits
Ameen Basha M K