9.8

CVE-2025-4918

Exploit

Out-of-bounds access when resolving Promise objects

An attacker was able to perform an out-of-bounds read or write on a JavaScript `Promise` object. This vulnerability was fixed in Firefox 138.0.4, Firefox ESR 128.10.1, Firefox ESR 115.23.1, Thunderbird 128.10.2, and Thunderbird 138.0.2.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
MozillaFirefox SwEditionesr Version < 115.23.1
MozillaFirefox SwEdition- Version < 138.0.4
MozillaFirefox SwEditionesr Version >= 116.0 < 128.10.1
MozillaThunderbird Version < 128.10.2
MozillaThunderbird SwEdition- Version >= 138.0 < 138.0.2
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 8.92% 0.946
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://bugzilla.mozilla.org/show_bug.cgi?id=1966612
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-38/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-36/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-37/
Vendor Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-4918-detect-firefox-out-of-bounds-write
Third Party Advisory
Exploit
https://www.vicarius.io/vsociety/posts/cve-2025-4918-mitigate-firefox-out-of-bounds-write
Third Party Advisory
Exploit
https://www.mozilla.org/security/advisories/mfsa2025-40/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-41/
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html