Description

Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 144 and Thunderbird 144.

INFO

Published Date :

2025-10-14T12:27:37.218Z

Last Modified :

2026-04-13T14:31:27.599Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2025-11721 vulnerability.

Vendors Products
Mozilla
  • Firefox
  • Thunderbird
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-11721.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1986816 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-11721 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-11721 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-81/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-84/ cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

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