Uninitialized memory in the JavaScript Engine component. This vulnerability was fixed in Firefox 142, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1977130 | Issue Tracking Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-64/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-66/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-67/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-70/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-71/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-72/ | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html | |
| https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html |
Configurations
Configuration 1 (hide)
|
History
05 Oct 2026, 15:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (es) Memoria sin inicializar en el componente JavaScript Engine. Esta vulnerabilidad afecta a Firefox menor que 142, Firefox ESR menor que 128.14, Firefox ESR menor que 140.2, Thunderbird menor que 142, Thunderbird menor que 128.14 y Thunderbird menor que 140.2. |
30 Sep 2026, 18:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (es) Memoria sin inicializar en el componente JavaScript Engine. Esta vulnerabilidad afecta a Firefox < 142, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14 y Thunderbird < 140.2. |
Information
Published : 2025-08-19 21:15
Updated : 2026-10-05 15:10
NVD link : CVE-2025-9181
Mitre link : CVE-2025-9181
CVE.ORG link : CVE-2025-9181
JSON object : View
Products Affected
mozilla
- firefox
- thunderbird
CWE
CWE-457
Use of Uninitialized Variable