TH
Product
Thunderbird
by Mozilla · last CVE Sep 30, 2026
On CISA KEVExploited in the wildRansomware-linked
2,073
CVEs
14
On KEV
10.0
Max CVSS
77
New 30D
Severity mix
Critical 379High 120Medium 1Low 0
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Add Thunderbird to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2023-5217
In wildKEV
8.8
49%
Sep 28
Google Chromium libvpx Heap Buffer Overflow Vulnerability
Affected: before 115.3.1
CVE-2023-4863
In wildKEV
8.8
100%
Sep 12
Google Chromium WebP Heap-Based Buffer Overflow Vulnerability
Affected: before 102.15.1; 115.0 before 115.2.2
CVE-2022-26485
In wildKEV
8.8
14%
Dec 22
Mozilla Firefox Use-After-Free Vulnerability
Affected: before 91.6.2
CVE-2019-17026
In wildKEV
8.8
46%
Mar 2
Mozilla Firefox And Thunderbird Type Confusion Vulnerability
Affected: before 68.4.1
CVE-2019-11707
In wildKEV
8.8
38%
Jul 23
Mozilla Firefox and Thunderbird Type Confusion Vulnerability
Affected: before 60.7.2
CVE-2013-1690
In wildKEV
8.8
69%
Jun 26
Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability
Affected: before 17.0.7
CVE-2020-6819
In wildKEV
8.1
3%
Apr 24
Mozilla Firefox And Thunderbird Use-After-Free Vulnerability
Affected: before 68.7.0
CVE-2020-6820
In wildKEV
8.1
7%
Apr 24
Mozilla Firefox And Thunderbird Use-After-Free Vulnerability
Affected: before 68.7.0
CVE-2016-9079
In wildKEV
7.5
87%
Jun 11
Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
Affected: before 45.5.1
CVE-2026-100832
8.8
0%
Sep 29
Use-after-free in the Graphics: Canvas2D component
Affected: before 140.17.0; 141.0 before 153.4.0
CVE-2026-100831
8.8
0%
Sep 29
Use-after-free in the DOM: UI Events & Focus Handling component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100825
8.8
0%
Sep 29
Use-after-free in the JavaScript Engine: JIT component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100824
8.8
0%
Sep 29
Privilege escalation in the Places component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100820
8.8
0%
Sep 29
Privilege escalation in the Address Bar component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100815
8.8
0%
Sep 29
Use-after-free in the CSS Parsing and Computation component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100814
8.8
0%
Sep 29
Incorrect boundary conditions in the JavaScript Engine: JIT component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100813
8.8
0%
Sep 29
Invalid pointer in the JavaScript Engine: JIT component
Affected: before 157.0
CVE-2026-100808
8.8
0%
Sep 29
Mitigation bypass in the DOM: Service Workers component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100807
8.8
0%
Sep 29
Privilege escalation in the DOM: Service Workers component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100801
8.8
0%
Sep 29
Privilege escalation in the DLL Services component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100797
8.8
0%
Sep 29
Privilege escalation due to use-after-free in the Graphics: WebRender component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100796
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: before 157.0
CVE-2026-100791
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100790
8.8
0%
Sep 29
Use-after-free in the XSLT component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100789
8.8
0%
Sep 29
Use-after-free in the Graphics: Canvas2D component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100785
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100784
8.8
0%
Sep 29
Use-after-free in the Layout: Text and Fonts component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100782
8.8
0%
Sep 29
Privilege escalation due to incorrect boundary conditions in the Graphics component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100780
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: before 157.0; 140.0 before 140.17.0; 153.0 before 153.4.0
CVE-2026-100779
8.8
0%
Sep 29
Use-after-free in the XSLT component
Affected: before 157.0; 140.0 before 140.17.0; 153.0 before 153.4.0
CVE-2026-100777
8.8
0%
Sep 29
Use-after-free in the Graphics: Canvas2D component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100776
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100774
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100773
8.8
0%
Sep 29
Use-after-free in the Storage: IndexedDB component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100772
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100769
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100768
8.8
0%
Sep 29
Use-after-free in the Graphics: WebGPU component
Affected: before 157.0
CVE-2026-100767
8.8
0%
Sep 29
Use-after-free in the Networking: Cache component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100765
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100764
8.8
0%
Sep 29
Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component
Affected: before 157.0
CVE-2026-100761
8.8
0%
Sep 29
Privilege escalation due to use-after-free in the Graphics: WebGPU component
Affected: before 157.0
CVE-2026-100757
8.8
0%
Sep 29
Use-after-free in the Widget component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-92076
8.8
0%
Sep 15
Incorrect boundary conditions in the Networking component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92074
8.8
0%
Sep 15
Mitigation bypass in the Popup Blocker component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92073
8.8
0%
Sep 15
Privilege escalation in the Enterprise Policies component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92067
8.8
0%
Sep 15
Use-after-free in the Widget: Gtk component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92065
8.8
0%
Sep 15
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92064
8.8
0%
Sep 15
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92062
8.8
0%
Sep 15
Privilege escalation in the Session Restore component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92060
8.8
0%
Sep 15
Use-after-free in the Internationalization component
Affected: before 153.3.0; 154.0 before 156.0
Page 1 of 3 · 120 total
The 500 most important CVEs for this product (exploited first, then by severity)