CVE-2026-100783

A high-impact uninitialized memory vulnerability exists in the Audio/Video component of Firefox . This flaw was addressed in several versions, including Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17 . While the specific root cause is not detailed beyond the uninitiali...

EUVD-2026-88935

Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100783 Uninitialized memory in the Audio/Video component

Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100783 Uninitialized memory in the Audio/Video component

Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100783

Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100783

Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

EUVD-2026-88911

Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100759 Uninitialized memory in the Storage: Quota Manager component

Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100759 Uninitialized memory in the Storage: Quota Manager component

Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100759

A vulnerability exists in the Storage: Quota Manager component due to uninitialized memory . This issue can be exploited remotely to cause a denial of service . Affected products include Mozilla Thunderbird ESR (earlier than 153.4) and various versions of Firefox and Thunderbird . Remediation is ...

CVE-2026-100759

Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100759

Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

PT-2026-102533

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description Uninitialized memory exists within the Storage: Quota...

PT-2026-102580

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description The Graphics: WebGPU component contains uninitialized memory, which can lead to unexpected behavior or security risks...

PT-2026-102557

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description Uninitialized memory exists within the Audio/Video...

PT-2026-102576

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Thunderbird versions prior to 157 Description The Graphics: WebGPU component contains uninitialized memory, which can lead to unexpected behavior or information disclosure. Recommendations Update Firefox to versio...

CVE-2026-100759: Use of Uninitialized Variable

Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

PT-2026-102573

Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 157 Firefox versions prior to 157 Description The Graphics: WebGPU component contains uninitialized memory, which can lead to unexpected behavior or security risks. Recommendations Update Thunderbird to version 15...

CVE-2026-100799: Use of Uninitialized Variable

Uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157...

Security Vulnerabilities fixed in Firefox ESR 140.17 — Mozilla

Note : We have changed how we publish advisories. We no longer roll all internally identified memory safety vulnerabilities into a single CVE and are now issuing an advisory for every individual bug. CVE-2026-100756: Incorrect boundary conditions in the Audio/Video: Playback component Reporter...