CVE-2026-16355

The JavaScript Engine: JIT component in Mozilla Firefox and Thunderbird is vulnerable to JIT miscompilation (CVE-2026-16355). This flaw can potentially lead to the execution of arbitrary code. The vulnerability has been addressed in Firefox 153 , Firefox ESR 115.38 , Firefox ESR 140.13 , Thunderb...

CVE-2026-16355 JIT miscompilation in the JavaScript Engine: JIT component

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

EUVD-2026-46203

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13...

CVE-2026-16369

An integer overflow vulnerability exists in the JavaScript: WebAssembly component of the Firefox and Thunderbird applications. This flaw could lead to security compromises, potentially allowing for the execution of arbitrary code. Remediation is available in Firefox 153 , Firefox ESR 140.13 , and...

CVE-2026-16368 Incorrect boundary conditions in the JavaScript: WebAssembly component

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

EUVD-2026-46201

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13...

CVE-2026-16354

CVE-2026-16354 is an information disclosure vulnerability within the Graphics: ImageLib component of the Mozilla Firefox and Thunderbird browsers. The flaw was addressed in Firefox versions 153 , ESR 115.38 , and ESR 140.13 , as well as Thunderbird versions 153 and 140.13 . No specific exploit de...

CVE-2026-16353

The Firefox browser and Thunderbird mail client are affected by a vulnerability involving an invalid pointer in the DOM: Bindings (WebIDL) component. This flaw could lead to multiple security consequences, including the potential execution of arbitrary code , privilege escalation , information di...

EUVD-2026-46194

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13...

CVE-2026-16363

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

CVE-2026-16363

A JIT miscompilation vulnerability exists in the JavaScript: WebAssembly component of the Firefox and Thunderbird web browsers. This flaw was addressed in Firefox 153 , Firefox ESR 140.13 , Thunderbird 153 , and Thunderbird 140.13 . While the vulnerability is documented as having a CRITICAL sever...

CVE-2026-16352 Sandbox escape due to use-after-free in the Disability Access APIs component

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

EUVD-2026-46193

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13...

EUVD-2026-46192

Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13...

CVE-2026-16362 Use-after-free in the WebRTC: Audio/Video component

Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

CVE-2026-16350 Incorrect boundary conditions in the Audio/Video: cubeb component

Incorrect boundary conditions in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

EUVD-2026-46189

Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13...

CVE-2026-16349 Same-origin policy bypass in the DOM: Navigation component

Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

PT-2026-61886

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

Mozilla -- Memory safety bugs

https://www.mozilla.org/en-US/security/advisories/mfsa2026-68/CVE-2026-16412 reports: Memory safety bugs present in Firefox ESR 140.12 and 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...