CVE-2025-5265Potential local code execution in “Copy as cURL” command
- 4.8MediumCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By mozilla
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium4.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | Medium4.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.
Affected products
- unaffected 115.24 – ≤ 115.*
- unaffected 128.11 – ≤ 128.*
- unaffected 139 – ≤ *
- unaffected 128.11 – ≤ 128.*
- unaffected 139 – ≤ *
References
References6
- https://bugzilla.mozilla.org/show_bug.cgi?id=1962301 (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-42/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-43/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-44/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-45/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-46/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-16339 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-5265)Record last updated .