There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1989978 | Issue Tracking Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-81/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-82/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-83/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-84/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-85/ | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2025/10/msg00015.html | |
| https://lists.debian.org/debian-lts-announce/2025/10/msg00031.html |
Configurations
Configuration 1 (hide)
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History
23 Oct 2026, 22:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (es) Había una forma de cambiar el valor de las propiedades de objetos JavaScript que se suponía que no eran escribibles. Esta vulnerabilidad afecta a Firefox < 144, Firefox ESR anterior a 115.29, Firefox ESR anterior a 140.4, Thunderbird < 144, y Thunderbird anterior a 140.4. |
18 Oct 2026, 21:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
Information
Published : 2025-10-14 13:15
Updated : 2026-10-23 22:10
NVD link : CVE-2025-11711
Mitre link : CVE-2025-11711
CVE.ORG link : CVE-2025-11711
JSON object : View
Products Affected
mozilla
- firefox
- thunderbird
CWE
CWE-591
Sensitive Data Storage in Improperly Locked Memory