CVE-2025-11713: Mozilla Firefox · Vulnerability
Affects Mozilla FirefoxSource CVE Database V5
Not known to be exploited · CVSS 8.1 High : upgrade to 144 soon.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 144
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 14 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Upgrade Mozilla Firefox to 144.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Mozilla Firefox | Affected
| Fixed in
|
AI-suggested
Mozilla has released official fixes for this vulnerability in Firefox 144 and Firefox ESR 140.4. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. Since the vulnerability requires user interaction, educating users to be cautious when using the “Copy as cURL” feature on Windows can reduce risk until updates are applied.
Description
Insufficient escaping in the “Copy as cURL” feature could have been used to trick a user into executing unexpected code on Windows. This did not affect the application when running on other operating systems. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.
References
- bugzilla.mozilla.org/show_bug.cgi?id=1986142 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-81/ (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-83/ (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-84/ (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-85/ (opens in a new tab)