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thunderbird vulnerabilities · Page 17

Vulnerabilities published for thunderbird in the last 30 days: 263. Listed in the KEV catalogue: 0.

RSS ↗ JSON ↗

Vulnerabilities: 1304

CVE-2026-100775
Critical · CVSS 9.6EPSS 0.33%No fix published
Sandbox escape in the Graphics component
Sandbox escape in the Graphics 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.
thunderbird Operating systems
Published September 29, 2026Updated October 1, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100774
High · CVSS 8.8EPSS 0.32%No fix published
Use-after-free in the DOM: Core & HTML component
Use-after-free in the DOM: Core & HTML 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100773
High · CVSS 8.8EPSS 0.4%No fix published
Use-after-free in the Storage: IndexedDB component
Use-after-free in the Storage: IndexedDB 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100772
High · CVSS 8.8EPSS 0.31%No fix published
Use-after-free in the DOM: Core & HTML component
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100771
High · CVSS 8.1EPSS 0.31%No fix published
Undefined behavior in the DOM: Streams component
Undefined behavior in the DOM: Streams 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.
thunderbird Operating systems
Published September 29, 2026Updated October 1, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100770
Critical · CVSS 9.6EPSS 0.32%No fix published
Sandbox escape due to use-after-free in the DOM: Content Processes component
Sandbox escape due to use-after-free in the DOM: Content Processes 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100769
High · CVSS 8.8EPSS 0.32%No fix published
Use-after-free in the JavaScript: WebAssembly component
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100768
High · CVSS 8.8EPSS 0.29%No fix published
Use-after-free in the Graphics: WebGPU component
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100767
High · CVSS 8.8EPSS 0.33%No fix published
Use-after-free in the Networking: Cache component
Use-after-free in the Networking: Cache 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100766
Medium · CVSS 4.3EPSS 0.25%No fix published
Information disclosure in the Networking: JAR component
Information disclosure in the Networking: JAR 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100765
High · CVSS 8.8EPSS 0.29%No fix published
Use-after-free in the JavaScript: WebAssembly component
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100764
High · CVSS 8.8EPSS 0.23%No fix published
Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component
Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100763
Critical · CVSS 9.1EPSS 0.38%No fix published
Incorrect boundary conditions in the Graphics: WebGPU component
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
thunderbird Operating systems
Published September 29, 2026Updated October 1, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100762
Critical · CVSS 9.6EPSS 0.32%No fix published
Sandbox escape due to use-after-free in the DOM: Content Processes component
Sandbox escape due to use-after-free in the DOM: Content Processes 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100761
High · CVSS 8.8EPSS 0.22%No fix published
Privilege escalation due to use-after-free in the Graphics: WebGPU component
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100760
Critical · CVSS 9.6EPSS 0.3%No fix published
Sandbox escape in the Security: Process Sandboxing component
Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
thunderbird Operating systems
Published September 29, 2026Updated October 1, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100759
High · CVSS 8.1EPSS 0.31%No fix published
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.
thunderbird Operating systems
Published September 29, 2026Updated October 1, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100758
Critical · CVSS 9.6EPSS 0.3%No fix published
Sandbox escape in the DOM: Navigation component
Sandbox escape in the DOM: Navigation 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100757
High · CVSS 8.8EPSS 0.32%No fix published
Use-after-free in the Widget component
Use-after-free in the Widget 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗
CVE-2026-100756
High · CVSS 8.1EPSS 0.31%No fix published
Incorrect boundary conditions in the Audio/Video: Playback component
Incorrect boundary conditions in the Audio/Video: Playback 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.
thunderbird Operating systems
Published September 29, 2026Updated September 30, 2026
Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗

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thunderbird vulnerabilities · Page 17

Sandbox escape in the Graphics component

Use-after-free in the DOM: Core & HTML component

Use-after-free in the Storage: IndexedDB component

Use-after-free in the DOM: Core & HTML component

Undefined behavior in the DOM: Streams component

Sandbox escape due to use-after-free in the DOM: Content Processes component

Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the Graphics: WebGPU component

Use-after-free in the Networking: Cache component

Information disclosure in the Networking: JAR component

Use-after-free in the JavaScript: WebAssembly component

Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component

Incorrect boundary conditions in the Graphics: WebGPU component

Sandbox escape due to use-after-free in the DOM: Content Processes component

Privilege escalation due to use-after-free in the Graphics: WebGPU component

Sandbox escape in the Security: Process Sandboxing component

Uninitialized memory in the Storage: Quota Manager component

Sandbox escape in the DOM: Navigation component

Use-after-free in the Widget component

Incorrect boundary conditions in the Audio/Video: Playback component

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