8.8

CVE-2026-100776

Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox Version >= 140.0.0 < 140.17.0
Mozilla ≫ Firefox Version >= 153.0.0 < 153.4.0
Mozilla ≫ Firefox Version >= 154.0.0 < 157.0.0
Mozilla ≫ Thunderbird Version >= 140.0 < 140.17.0
Mozilla ≫ Thunderbird Version >= 153.0 < 153.4.0
Mozilla ≫ Thunderbird Version >= 154.0 < 157.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.33% 0.241
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://www.mozilla.org/security/advisories/mfsa2026-99/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-100/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-97/
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=2068374
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-101/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-102/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-103/
Vendor Advisory