CVEvulnerability

CVE-2026-12297

9.6 CRITICAL Published 2026-06-16 Modified 2026-10-26 Official page ↗
Status
Modified
Published
2026-06-16
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.6 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-119, CWE-653

Description

Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Affected configurations

• mozilla firefox (< 115.37.0) • mozilla firefox (< 152.0.0) • mozilla firefox (>= 128.0 < 140.12.0) • mozilla thunderbird (< 140.12.0) • mozilla thunderbird (< 152.0.0)

Related

Weakness · CWE (2)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness
  • CWE-653 Improper Isolation or Compartmentalization weakness

References