PT-2025-9667 · Mozilla+4 · Firefox+4

Anbu · Published 2025-03-04 · Updated 2026-02-02 · CVE-2025-1942

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 136

Description The issue arises when the String.toUpperCase() function causes a string to increase in length, potentially incorporating uninitialized memory into the result string.

Recommendations For versions prior to 136, update to version 136 or later to resolve the issue.

Fix

Use of Uninitialized Resource

Access of Uninitialized Pointer

Weakness Enumeration

CWE-908

CWE-824

Related Identifiers

ALT-PU-2025-11100

ALT-PU-2025-14599

ALT-PU-2025-4567

ALT-PU-2025-5137

ALT-PU-2025-7695

ALT-PU-2025-7697

BDU:2025-02879

CVE-2025-1942

OPENSUSE-SU-2025:14861-1

USN-7334-1

USN-7991-1

Affected Products

Alt Linux

Astra Linux

Firefox

Linuxmint

Ubuntu

References · 163

• https://ubuntu.com/security/CVE-2024-10462 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-11708 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-1018 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-13020 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-10528 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-0247 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-8030 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-8027 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-0879 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7334-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:14861-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-1942 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-14328 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-8034 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-4089 · Vendor Advisory