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-2016-5257
9.8
4%
Sep 22
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4 and Thunderbird < 45.4 allow remote attackers to cause a…
Affected: through 48.0.2; 45.1.0; 45.1.1; 45.2.0; 45.3.0
CVE-2016-5256
9.8
4%
Sep 22
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0 allow remote attackers to cause a denial of service (memory corruption and application…
Affected: through 48.0.2
CVE-2016-5254
9.8
3%
Aug 5
Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code…
Affected: through 47.0.1; 45.1.0; 45.1.1; 45.2.0; 45.3.0
CVE-2016-0718
9.8
13%
May 26
Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow
Affected: before 48.0
CVE-2016-1962
9.8
6%
Mar 13
Use-after-free vulnerability in the mozilla::DataChannelConnection::Close function in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to…
Affected: through 44.0.2; 38.0; 38.0.1; 38.0.5; 38.1.0; 38.1.1; +8 more
CVE-2016-1946
9.8
6%
Jan 31
The MoofParser::Metadata function in binding/MoofParser.cpp in libstagefright in Mozilla Firefox before 44.0 does not limit the size of read operations, which might allow remote…
Affected: through 43.0.4
CVE-2016-1944
9.8
4%
Jan 31
The Buffer11::NativeBuffer11::map function in ANGLE, as used in Mozilla Firefox before 44.0, might allow remote attackers to cause a denial of service (memory corruption) or…
Affected: 43.0.4
CVE-2016-1930
9.8
6%
Jan 31
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 44.0 and Firefox ESR 38.x before 38.6 allow remote attackers to cause a denial of service…
Affected: through 43.0.4; 38.0; 38.1.0; 38.2.0; 38.3.0; 38.4.0; +1 more
CVE-2015-7182
9.8
10%
Nov 5
Heap-based buffer overflow in the ASN.1 decoder in Mozilla Network Security Services (NSS) before 3.19.2.1 and 3.20.x before 3.20.1, as used in Firefox before 42.0 and Firefox ESR…
Affected: 38.0; 38.0.1; 38.0.5; 38.1.0; 38.1.1; 38.2.0; +3 more
CVE-2014-1532
9.8
5%
Apr 30
Use-after-free vulnerability in the nsHostResolver::ConditionallyRefreshRecord function in libxul.so in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird…
Affected: before 29.0; 24.0 before 24.5
CVE-2014-1524
9.8
8%
Apr 30
The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not…
Affected: before 29.0; 24.0 before 24.5
CVE-2014-1514
9.8
6%
Mar 19
vmtypedarrayobject.cpp in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 does not validate the length of the…
Affected: before 28.0; 24.0 before 24.4
CVE-2014-1511
9.8
84%
Mar 19
Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allow remote attackers to bypass the popup blocker via unspecified…
Affected: before 28.0; 24.0 before 24.4
CVE-2014-1510
9.8
82%
Mar 19
The Web IDL implementation in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allows remote attackers to execute…
Affected: before 28.0; 24.0 before 24.4
CVE-2014-1493
9.8
8%
Mar 19
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allow…
Affected: before 28.0; 24.0 before 24.4
CVE-2014-1486
9.8
7%
Feb 6
Use-after-free vulnerability in the imgRequestProxy function in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, and SeaMonkey before 2.24…
Affected: before 27.0; 24.0 before 24.3
CVE-2014-1477
9.8
5%
Feb 6
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, and SeaMonkey before 2.24 allow…
Affected: before 27.0; 24.0 before 24.3
CVE-2013-6671
9.8
11%
Dec 11
The nsGfxScrollFrameInner::IsLTR function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allows remote attackers…
Affected: before 26.0; 24.0 before 24.2
CVE-2013-5618
9.8
10%
Dec 11
Use-after-free vulnerability in the nsNodeUtils::LastRelease function in the table-editing user interface in the editor component in Mozilla Firefox before 26.0, Firefox ESR 24.x…
Affected: before 26.0; 24.0 before 24.2
CVE-2013-5616
9.8
7%
Dec 11
Use-after-free vulnerability in the nsEventListenerManager::HandleEventSubType function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and…
Affected: before 26.0; 24.0 before 24.2
CVE-2013-5615
9.8
4%
Dec 11
The JavaScript implementation in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 does not properly enforce certain…
Affected: before 26.0; 24.0 before 24.2
CVE-2013-5613
9.8
9%
Dec 11
Use-after-free vulnerability in the PresShell::DispatchSynthMouseMove function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey…
Affected: before 26.0; 24.0 before 24.2
CVE-2013-5609
9.8
8%
Dec 11
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allow…
Affected: before 26.0; 24.0 before 24.2
CVE-2010-1205
9.8
43%
Jun 30
Buffer overflow in pngpread.c in libpng before 1.2.44 and 1.4.x before 1.4.3, as used in progressive applications, might allow remote attackers to execute arbitrary code via a PNG…
Affected: before 3.5.11; 3.5.12 before 3.6.7
CVE-2026-100829
9.6
0%
Sep 29
Mitigation bypass in the DOM: Security component
Affected: before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100828
9.6
0%
Sep 29
Mitigation bypass in the Bookmarks & History component
Affected: before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100819
9.6
0%
Sep 29
Sandbox escape due to incorrect boundary conditions in the XPCOM component
Affected: before 115.42.0; 116.0 before 140.17.0; 141.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100818
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the Widget: Gtk component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100811
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the DOM: Core & HTML component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100804
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the Preferences: Backend component
Affected: before 157.0.0
CVE-2026-100800
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the Disability Access APIs component
Affected: before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100794
9.6
0%
Sep 29
Sandbox escape due to incorrect boundary conditions in the Internationalization component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100787
9.6
0%
Sep 29
Sandbox escape in the XUL component
Affected: before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100786
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the Graphics component
Affected: before 115.42.0; 116.0 before 140.17.0; 141.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100781
9.6
0%
Sep 29
Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component
Affected: before 157.0.0; 115.1.0 before 115.42.0; 140.0 before 140.17.0; 153.0 before 153.4.0
CVE-2026-100778
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the DOM: Core & HTML component
Affected: 115.0.1 before 115.42.0; 140.0.0 before 140.17.0; 153.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100775
9.6
0%
Sep 29
Sandbox escape in the Graphics component
Affected: 115.0.1 before 115.42.0; 140.0.0 before 140.17.0; 153.0.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100770
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the DOM: Content Processes component
Affected: 115.0 before 115.42.0; 140.0.0 before 140.17.0; 153.0.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100762
9.6
0%
Sep 29
Sandbox escape due to use-after-free in the DOM: Content Processes component
Affected: before 115.42.0; 116.0.0 before 140.17.0; 141.0.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100760
9.6
0%
Sep 29
Sandbox escape in the Security: Process Sandboxing component
Affected: before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-100758
9.6
0%
Sep 29
Sandbox escape in the DOM: Navigation component
Affected: before 115.42.0; 116.0.0 before 140.17.0; 141.0.0 before 153.4.0; 154.0.0 before 157.0.0
CVE-2026-92071
9.6
0%
Sep 15
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
Affected: before 153.3.0; 154.0.0 before 156.0.0
CVE-2026-92045
9.6
0%
Sep 15
Sandbox escape due to incorrect boundary conditions in the WebRTC component
Affected: before 153.3.0; 154.0.0 before 156.0.0
CVE-2026-92035
9.6
0%
Sep 15
Sandbox escape due to incorrect boundary conditions in the Graphics component
Affected: before 115.42.0; 116.0 before 140.17.0; 141.0 before 153.3.0; 154.0.0 before 156.0.0
CVE-2026-92032
9.6
0%
Sep 15
Sandbox escape due to invalid pointer in the Graphics component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0.0 before 156.0.0
CVE-2026-92018
9.6
0%
Sep 15
Sandbox escape in the DOM: Core & HTML component
Affected: before 115.41.0; 116.0 before 140.16.0; 141.0 before 153.3.0; 154.0.0 before 156.0.0
CVE-2026-84121
9.6
0%
Sep 1
Sandbox escape due to use-after-free in the DOM: Security component
Affected: before 115.40.0; 116.0 before 140.15.0; 141.0.0 before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-84119
9.6
0%
Sep 1
Sandbox escape due to use-after-free in the DOM: Navigation component
Affected: before 115.40.0; 116.0 before 140.15.0; 141.0.0 before 153.2.0; 154.0.0 before 155.0.0
CVE-2026-12297
9.6
0%
Jun 16
Sandbox escape due to incorrect boundary conditions in the Networking component
Affected: before 115.37.0; before 152.0.0; 128.0 before 140.12.0
CVE-2026-12296
9.6
0%
Jun 16
Sandbox escape in the Security: Process Sandboxing component
Affected: before 140.12.0; before 152.0.0
Page 9 of 10 · 489 total
The 500 most important CVEs for this product (exploited first, then by severity)