FI
Browser
Firefox
by Mozilla · last CVE Oct 6, 2026
On CISA KEVExploited in the wildRansomware-linked
3,445
CVEs
15
On KEV
10.0
Max CVSS
77
New 30D
Severity mix
Critical 489High 10Medium 1Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2019-11708
In wildKEV
10.0
56%
Jul 23
Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability
Affected: before 67.0.4
CVE-2024-9680
RansomwareIn wildKEV
9.8
23%
Oct 9
Mozilla Firefox Use-After-Free Vulnerability
Affected: before 131.0.2
CVE-2010-3765
In wildKEV
9.8
83%
Oct 27
Mozilla Multiple Products Remote Code Execution Vulnerability
Affected: 3.5; 3.5.1; 3.5.2; 3.5.3; 3.5.4; 3.5.5; +19 more
CVE-2022-26486
In wildKEV
9.6
2%
Dec 22
Mozilla Firefox Use-After-Free Vulnerability
Affected: before 97.0.2
CVE-2023-5217
In wildKEV
8.8
49%
Sep 28
Google Chromium libvpx Heap Buffer Overflow Vulnerability
Affected: before 115.3.1; before 118.0.1; before 118.1
CVE-2023-4863
In wildKEV
8.8
100%
Sep 12
Google Chromium WebP Heap-Based Buffer Overflow Vulnerability
Affected: before 102.15.1; before 117.0.1; 115.1.0 before 115.2.1
CVE-2022-26485
In wildKEV
8.8
14%
Dec 22
Mozilla Firefox Use-After-Free Vulnerability
Affected: before 97.0.2
CVE-2019-17026
In wildKEV
8.8
46%
Mar 2
Mozilla Firefox And Thunderbird Type Confusion Vulnerability
Affected: before 72.0.1
CVE-2019-11707
In wildKEV
8.8
38%
Jul 23
Mozilla Firefox and Thunderbird Type Confusion Vulnerability
Affected: before 67.0.3
CVE-2015-4495
In wildKEV
8.8
69%
Aug 8
Mozilla Firefox Security Feature Bypass Vulnerability
Affected: before 39.0.3; 38.0 before 38.1.1
CVE-2013-1690
In wildKEV
8.8
69%
Jun 26
Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability
Affected: before 22.0; 17.0 before 17.0.7
CVE-2020-6819
In wildKEV
8.1
3%
Apr 24
Mozilla Firefox And Thunderbird Use-After-Free Vulnerability
Affected: before 74.0.1
CVE-2020-6820
In wildKEV
8.1
7%
Apr 24
Mozilla Firefox And Thunderbird Use-After-Free Vulnerability
Affected: before 74.0.1
CVE-2016-9079
In wildKEV
7.5
87%
Jun 11
Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
Affected: before 50.0.2
CVE-2013-1675
In wildKEV
6.5
7%
May 16
Mozilla Firefox Information Disclosure Vulnerability
Affected: before 21.0; 17.0 before 17.0.6
CVE-2026-75874
10.0
0%
Aug 18
Sandbox escape in the Remote Settings Client component
Affected: before 154.0.0
CVE-2026-16367
10.0
1%
Jul 21
Sandbox escape due to invalid pointer in the Disability Access APIs component
Affected: before 153.0.0
CVE-2026-4725
10.0
0%
Mar 24
Sandbox escape due to use-after-free in the Graphics: Canvas2D component
Affected: before 149.0
CVE-2026-4692
10.0
1%
Mar 24
Sandbox escape in the Responsive Design Mode component
Affected: before 115.34.0; before 149.0; 128.0 before 140.9.0
CVE-2026-4689
10.0
1%
Mar 24
Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component
Affected: before 115.34.0; before 149.0; 128.0 before 140.9.0
CVE-2026-4688
10.0
1%
Mar 24
Sandbox escape due to use-after-free in the Disability Access APIs component
Affected: before 140.9.0; before 149.0
CVE-2026-2778
10.0
1%
Feb 24
Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component
Affected: before 115.33.0; before 148.0; 128.0 before 140.8.0
CVE-2026-2776
10.0
1%
Feb 24
Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software
Affected: before 115.33.0; before 148.0; 128.0 before 140.8.0
CVE-2026-2768
10.0
0%
Feb 24
Sandbox escape in the Storage: IndexedDB component
Affected: before 140.8.0; before 148.0
CVE-2026-2761
10.0
0%
Feb 24
Sandbox escape in the Graphics: WebRender component
Affected: before 115.33.0; before 148.0; 128.0 before 140.8.0
CVE-2026-2760
10.0
0%
Feb 24
Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component
Affected: before 115.33.0; before 148.0; 128.0 before 140.8.0
CVE-2026-0881
10.0
0%
Jan 13
Sandbox escape in the Messaging System component
Affected: before 147.0
CVE-2025-2857
10.0
2%
Mar 27
Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code
Affected: before 136.0.4; before 115.21.1; 128.1.0 before 128.8.1
CVE-2019-25136
10.0
1%
Jun 19
A compromised child process could have injected XBL Bindings into privileged CSS rules, resulting in arbitrary code execution and a sandbox escape
Affected: before 70.0
CVE-2021-4140
10.0
1%
Dec 22
It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox
Affected: before 96.0
CVE-2021-38503
10.0
4%
Dec 8
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame
Affected: before 94.0
CVE-2020-12389
10.0
2%
May 26
The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape
Affected: before 76.0
CVE-2020-12388
10.0
4%
May 26
The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape
Affected: before 76.0
CVE-2018-18505
10.0
4%
Feb 5
An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC…
Affected: before 65
CVE-2016-1931
10.0
6%
Jan 31
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 44.0 allow remote attackers to cause a denial of service (memory corruption and application…
Affected: through 43.0.4
CVE-2026-106016
9.8
0%
Oct 6
Mitigation bypass in the File Handling component
Affected: before 157.0.1
CVE-2026-100810
9.8
0%
Sep 29
Other issue in the DevTools component
Affected: before 157.0.0
CVE-2026-100788
9.8
0%
Sep 29
Invalid pointer in the JavaScript: WebAssembly component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-92066
9.8
1%
Sep 15
Sandbox escape in the Profile Backup component
Affected: before 156.0.0
CVE-2026-92061
9.8
1%
Sep 15
Incorrect boundary conditions in the Security: Process Sandboxing component
Affected: before 156.0.0
CVE-2026-92037
9.8
1%
Sep 15
Incorrect boundary conditions in the DOM: Animation component
Affected: before 156.0.0
CVE-2026-92036
9.8
1%
Sep 15
Incorrect boundary conditions in the Networking: HTTP component
Affected: before 156.0.0
CVE-2026-84143
9.8
0%
Sep 1
Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15
Affected: before 140.15.0; 141.0.0 before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-84142
9.8
1%
Sep 1
Internally found bugs fixed in Thunderbird 155
Affected: before 155.0.0
CVE-2026-84141
9.8
0%
Sep 1
Integer overflow in the Graphics: ImageLib component
Affected: before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-84140
9.8
0%
Sep 1
Site isolation issue in the DOM: Navigation component
Affected: before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-84134
9.8
1%
Sep 1
Other issue in the Profile Backup component
Affected: before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-84133
9.8
0%
Sep 1
Site isolation issue in the DOM: Push Subscriptions component
Affected: before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-84129
9.8
0%
Sep 1
Site isolation issue in the DOM: Navigation component
Affected: before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-74989
9.8
1%
Aug 18
Internally found bugs fixed in Firefox 154
Affected: before 154.0.0
Page 1 of 10 · 500 total
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The 500 most important CVEs for this product (exploited first, then by severity)