medium6.5
CVE-2025-9181
Uninitialized memory in the JavaScript Engine component.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 128.14.0 before 142.0 from 140.0 before 140.2.0 |
| Mozilla | Thunderbird | before 128.14.0 before 142.0 from 140.0 before 140.2.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.mozilla.org/show_bug.cgi?id=1977130
- https://www.mozilla.org/security/advisories/mfsa2025-64/
- https://www.mozilla.org/security/advisories/mfsa2025-66/
- https://www.mozilla.org/security/advisories/mfsa2025-67/
- https://www.mozilla.org/security/advisories/mfsa2025-70/
- https://www.mozilla.org/security/advisories/mfsa2025-71/
- https://www.mozilla.org/security/advisories/mfsa2025-72/
- https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html
- https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html