CVE Vulnerabilities

CVE-2026-12296

Protection Mechanism Failure

Published: Jun 16, 2026 | Modified: Jun 18, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Weakness

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Affected Software

NameVendorStart VersionEnd Version
FirefoxMozilla*140.12.0 (excluding)
FirefoxMozilla*152.0.0 (excluding)
ThunderbirdMozilla*140.12.0 (excluding)
ThunderbirdMozilla*152.0.0 (excluding)
Red Hat Enterprise Linux 10RedHatfirefox-0:140.12.0-1.el10_2*
Red Hat Enterprise Linux 8RedHatfirefox-0:140.12.0-1.el8_10*
Red Hat Enterprise Linux 9RedHatfirefox-0:140.12.0-1.el9_8*
Mozjs102Ubuntuesm-apps/noble*
Mozjs102Ubuntujammy*
Mozjs102Ubuntunoble*
Mozjs115Ubuntunoble*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs68Ubuntuesm-infra/focal*
Mozjs78Ubuntuesm-apps/jammy*
Mozjs78Ubuntujammy*
Mozjs91Ubuntujammy*
ThunderbirdUbuntujammy*

References