Mozilla Firefox ESR Security Update (mfsa_2026-02) - Mac OS X

Mozilla Firefox ESR is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:mozilla:firefoxesr";...

firefox-esr-140.7.0-1.1 on GA media (moderate)

firefox-esr-140.7.0-1.1 on GA media Announcement ID: openSUSE-SU-2026:10037-1 Rating: moderate Cross-References: CVE-2025-14327 CVE-2026-0877 CVE-2026-0878 CVE-2026-0879 CVE-2026-0880 CVE-2026-0882 CVE-2026-0883 CVE-2026-0884 CVE-2026-0885 CVE-2026-0886 CVE-2026-0887 CVE-2026-0890 CVE-2026-0891...

Mozilla Firefox ESR < 115.32

The version of Firefox ESR installed on the remote Windows host is prior to 115.32. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-02 advisory. - Use-after-free in the IPC component. This vulnerability affects Firefox 147, Firefox ESR 115.32, Firefox ESR 140....

Mozilla Firefox ESR < 115.32

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.32. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-02 advisory. - Use-after-free in the IPC component. This vulnerability affects Firefox 147, Firefox ESR 115.32, Firefo...

Mozilla Firefox ESR Security Update (mfsa_2026-03) - Windows

Mozilla Firefox ESR is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:mozilla:firefoxesr";...

CVE-2026-0887

Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0885

Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0885

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0886

Incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0879

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0884

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0880

Sandbox escape due to integer overflow in the Graphics component. This vulnerability affects Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0887

Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability affects Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0891

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox...

CVE-2026-0878

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

UBUNTU-CVE-2026-0890

Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability affects Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0879

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

Astra Linux – Vulnerability in Firefox

Use-after-free in MediaTrackGraphImpl::GetInstance. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4...

Astra Linux – Vulnerability in Firefox, Thunderbird

JIT compilation errors in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6...

CVE-2026-0891 Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in...