Mozilla Thunderbird vulnerabilities
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Published CVEs affecting Mozilla Thunderbird: 523 record(s), with affected versions and fixes.cpe:2.3:a:mozilla:thunderbird
CVE-2026-8092
High · 8.1
CWE-125 May 7, 2026
Memory safety bugs fixed in Firefox ESR 115.35.2, Firefox ESR 140.10.2 and Firefox 150.0.2
Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. 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 Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.
CVE-2026-8091
Critical · 9.8
CWE-754 May 7, 2026
Incorrect boundary conditions in the Audio/Video: Playback component
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2.
CVE-2026-8090
High · 7.3
CWE-416 May 7, 2026
Use-after-free in the DOM: Networking component
Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.
CVE-2026-7324
High · 7.3
CWE-119 Apr 28, 2026
Memory safety bugs fixed in Thunderbird 150.0.1
Memory safety bugs present in Thunderbird 150.0.0. 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 Firefox 150.0.1 and Thunderbird 150.0.1.
CVE-2026-7323
High · 7.3
CWE-119 Apr 28, 2026
Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVE-2026-7322
High · 7.3
CWE-119 Apr 28, 2026
Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVE-2026-7321
Critical · 9.6
CWE-120 Apr 28, 2026
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.
CVE-2026-7320
High · 7.5
CWE-119 Apr 28, 2026
Information disclosure due to incorrect boundary conditions in the Audio/Video component
Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVE-2026-6786
High · 7.5
CWE-125 Apr 26, 2026
Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs present in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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 Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6785
High · 7.5
CWE-125 Apr 26, 2026
Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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 Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6784
High · 7.5
CWE-125 Apr 21, 2026
Memory safety bugs fixed in Firefox 150 and Thunderbird 150
Memory safety bugs present in Firefox 149 and Thunderbird 149. 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 Firefox 150 and Thunderbird 150.
CVE-2026-6783
Medium · 5.3
CWE-190 Apr 21, 2026
Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component
Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6782
High · 7.5
CWE-200 Apr 21, 2026
Information disclosure in the IP Protection component
Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6781
High · 7.5
CWE-400 Apr 21, 2026
Denial-of-service in the Audio/Video: Playback component
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6780
High · 7.5
CWE-400 Apr 21, 2026
Denial-of-service in the Audio/Video: Playback component
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6779
Medium · 5.3
CWE-20 Apr 21, 2026
Other issue in the JavaScript Engine component
Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6778
Medium · 5.3
CWE-476 Apr 21, 2026
Invalid pointer in the Audio/Video: Playback component
Invalid pointer in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6777
Medium · 5.3
CWE-20 Apr 21, 2026
Other issue in the Networking: DNS component
Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6776
High · 7.8
CWE-119 Apr 21, 2026
Incorrect boundary conditions in the WebRTC: Networking component
Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6775
Medium · 5.3
CWE-119 Apr 21, 2026
Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6774
Medium · 5.4
CWE-693 Apr 21, 2026
Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6773
High · 7.5
CWE-190 Apr 21, 2026
Denial-of-service due to integer overflow in the Graphics: WebGPU component
Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6772
High · 7.5
CWE-754 Apr 21, 2026
Incorrect boundary conditions in the Libraries component in NSS
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6771
Critical · 9.8
CWE-288 Apr 21, 2026
Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6770
Medium · 6.5
CWE-200 Apr 21, 2026
Other issue in the Storage: IndexedDB component
Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.