CVE-2026-75874

A sandbox escape vulnerability exists in the Remote Settings Client component of the Mozilla Firefox and Thunderbird browsers. This flaw allows an attacker to bypass security restrictions, potentially leading to the execution of arbitrary code. The issue is present in several versions, including ...

CVE-2026-75874 Sandbox escape in the Remote Settings Client component

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and Thunderbird 153.2...

CVE-2026-75874

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and Thunderbird 153.2...

CVE-2026-74942

A privilege escalation vulnerability exists in the Remote Settings Client component of the Firefox browser and Thunderbird mail client. The vulnerability affects multiple versions and has been addressed in Firefox 154 , Firefox ESR 115.39 , Firefox ESR 140.14 , Firefox ESR 153.1 , Thunderbird 154...

CVE-2026-74942 Privilege escalation in the Remote Settings Client component

Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

CVE-2026-74942 Privilege escalation in the Remote Settings Client component

Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

CVE-2026-74942

Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

EUVD-2026-60749

Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

PT-2026-77024

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 154 Thunderbird versions prior to 154 Description A sandbox escape exists in the Remote Settings Client component. A sandbox is a security mechanism for separating running programs, ensuring that code executing in a...

CVE-2026-75874: Protection Mechanism Failure

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and Thunderbird 153.2...

CVE-2026-74942: Improper Privilege Management

Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

PT-2026-76975

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 154 Firefox ESR versions prior to 115.39 Firefox ESR versions prior to 140.14 Firefox ESR versions prior to 153.1 Thunderbird versions prior to 154 Thunderbird versions prior to 140.14 Thunderbird versions prior to...

Astra Linux – Vulnerability in Thunderbird

Bypass of mitigation mechanisms in the Remote Settings Client component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...