Security Vulnerabilities fixed in Firefox 153 — Mozilla

Memory safety bugs present in Firefox 152. 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. Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed...

PT-2026-61885

Name of the Vulnerable Software and Affected Versions Firefox for Android versions prior to 153 Description An information disclosure issue exists within the Privacy component, which could allow sensitive data to be exposed. Recommendations Update to version 153...

PT-2026-61922

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 153 Thunderbird versions prior to 153 Description A JIT miscompilation issue exists within the JIT component of the JavaScript Engine. JIT Just-In-Time compilation is a method used by the engine to improve performance...

PT-2026-61871

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 153 Firefox ESR versions prior to 115.38 Firefox ESR versions prior to 140.13 Thunderbird versions prior to 153 Thunderbird version prior to 140.13 Description Incorrect boundary conditions exist within the Audio/Vide...

PT-2026-61878

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 153 Thunderbird versions prior to 153 Description A privilege escalation issue exists within the DOM Navigation component. Recommendations Update Firefox to version 153. Update Thunderbird to version 153...

PT-2026-61866

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 153 Firefox ESR versions prior to 115.38 Firefox ESR versions prior to 140.13 Thunderbird versions prior to 153 Thunderbird version prior to 140.13 Description An information disclosure issue exists within the Graphic...

PT-2026-61909

Name of the Vulnerable Software and Affected Versions Firefox for Android versions prior to 153 Description A clickjacking issue exists in the WebExtensions component. Clickjacking is a technique where an attacker uses multiple transparent or semi-transparent layers to trick a user into clicking ...

PT-2026-61911

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 153 Thunderbird versions prior to 153 Description A site isolation issue exists within the DOM Navigation component. Site isolation is a security mechanism that ensures web pages from different sites are processed in...

Mozilla Firefox < 153.0

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 153.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-68 advisory. - Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of memo...

Amazon Linux 2023 : firefox (ALAS2023-2026-1928)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1928 advisory. Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

SUSE CVE-2026-15718

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13...

CVE-2026-15718

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13...

CVE-2026-15718

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13...

UBUNTU-CVE-2026-15719

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13...

UBUNTU-CVE-2026-15718

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13...

EUVD-2026-43663

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6...

PT-2026-58015

Name of the Vulnerable Software and Affected Versions Mozilla Firefox versions prior to 152.0.6 Description A flaw in the DOM Navigation component involves improper access control. A remote attacker could exploit this issue to compromise the confidentiality and integrity of protected information...

firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory...

Linux Distros Unpatched Vulnerability : CVE-2026-14241

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Memory safety bugs present in Firefox 152.0.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these coul...

Mozilla Firefox < 152.0.4

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 152.0.4. It is, therefore, affected by a vulnerability as referenced in the mfsa2026-62 advisory. - Memory safety bugs present in Firefox 152.0.3. Some of these bugs showed evidence of memory corruption and we presu...