9.8

CVE-2025-1942

Disclosure of uninitialized memory when .toUpperCase() causes string to get longer

When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string. This vulnerability was fixed in Firefox 136 and Thunderbird 136.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox Version < 136.0
Mozilla ≫ Thunderbird Version < 136.0
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 0.47% 0.379
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 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-908 Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.

https://www.mozilla.org/security/advisories/mfsa2025-14/
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1947139
Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2025-17/
Vendor Advisory