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Vulnerabilities

Mozilla Thunderbird

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

1919CVEs
CVE-2026-4689
Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component
Published 2026-03-24 · Modified
10.0EPSS 0.007
CVE-2026-2761
Sandbox escape in the Graphics: WebRender component
Published 2026-02-24 · Modified
10.0EPSS 0.006
CVE-2026-2778
Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component
Published 2026-02-24 · Modified
10.0EPSS 0.006
CVE-2026-2760
Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component
Published 2026-02-24 · Modified
10.0EPSS 0.006
CVE-2026-2776
Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software
Published 2026-02-24 · Modified
10.0EPSS 0.006
CVE-2026-4692
Sandbox escape in the Responsive Design Mode component
Published 2026-03-24 · Modified
10.0EPSS 0.006
CVE-2026-2768
Sandbox escape in the Storage: IndexedDB component
Published 2026-02-24 · Modified
10.0EPSS 0.006
CVE-2026-75874
Sandbox escape in the Remote Settings Client component
Published 2026-08-18 · Modified
10.0EPSS 0.005
CVE-2026-16367
Sandbox escape due to invalid pointer in the Disability Access APIs component
Published 2026-07-21 · Analyzed
10.0EPSS 0.004
CVE-2026-0881
Sandbox escape in the Messaging System component
Published 2026-01-13 · Modified
10.0EPSS 0.004
CVE-2014-1511
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 vectors.
Published 2014-03-19 · Modified
9.81 PoCEPSS 0.836
CVE-2010-3765
Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x before 2.0.10, when JavaScript is enabled, allows remote attackers to execute arbitrary code via vectors related to nsCSSFrameConstructor::ContentAppended, the appendChild method, incorrect index tracking, and the creation of multiple frames, which triggers memory corruption, as exploited in the wild in October 2010 by the Belmoo malware.
Published 2010-10-27 · Analyzed
9.8KEV4 PoCEPSS 0.832
CVE-2014-1510
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 arbitrary JavaScript code with chrome privileges by using an IDL fragment to trigger a window.open call.
Published 2014-03-19 · Modified
9.81 PoCEPSS 0.823
CVE-2010-1205
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 image that triggers an additional data row.
Published 2010-06-30 · Modified
9.81 PoCEPSS 0.434
CVE-2017-5375
JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
Published 2018-06-11 · Modified
9.83 PoCEPSS 0.338
CVE-2024-9680
An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox < 131.0.2, Firefox ESR < 128.3.1, Firefox ESR < 115.16.1, Thunderbird < 131.0.1, Thunderbird < 128.3.1, and Thunderbird < 115.16.0.
Published 2024-10-09 · Analyzed
9.8KEVEPSS 0.232
CVE-2016-9899
Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.
Published 2018-06-11 · Modified
9.81 PoCEPSS 0.211
CVE-2018-5159
An integer overflow can occur in the Skia library due to 32-bit integer use in an array without integer overflow checks, resulting in possible out-of-bounds writes. This could lead to a potentially exploitable crash triggerable by web content. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
Published 2018-06-11 · Modified
9.81 PoCEPSS 0.210
CVE-2019-9791
The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Published 2019-04-26 · Modified
9.81 PoCEPSS 0.199
CVE-2017-5404
A use-after-free error can occur when manipulating ranges in selections with one node inside a native anonymous tree and one node outside of it. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
Published 2018-06-11 · Modified
9.81 PoCEPSS 0.173
CVE-2019-9792
The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Published 2019-04-26 · Modified
9.81 PoCEPSS 0.132
CVE-2018-18500
A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
Published 2019-02-05 · Modified
9.8EPSS 0.127
CVE-2019-11703
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.
Published 2019-07-23 · Modified
9.81 PoCEPSS 0.105
CVE-2019-11704
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.
Published 2019-07-23 · Modified
9.81 PoCEPSS 0.105
CVE-2019-11705
A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.
Published 2019-07-23 · Modified
9.81 PoCEPSS 0.099
CVE-2018-18492
A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
Published 2019-02-28 · Modified
9.8EPSS 0.096
CVE-2025-4918
Out-of-bounds access when resolving Promise objects
Published 2025-05-17 · Modified
9.8EPSS 0.094
CVE-2025-0247
Memory safety bugs fixed in Firefox 134 and Thunderbird 134
Published 2025-01-07 · Modified
9.8EPSS 0.093
CVE-2014-1524
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 properly check whether objects are XBL objects, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code that accesses a non-XBL object as if it were an XBL object.
Published 2014-04-30 · Modified
9.8EPSS 0.077
CVE-2017-7828
A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.
Published 2018-06-11 · Modified
9.8EPSS 0.073
CVE-2018-5097
A use-after-free vulnerability can occur during XSL transformations when the source document for the transformation is manipulated by script content during the transformation. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
Published 2018-06-11 · Modified
9.8EPSS 0.072
CVE-2018-5104
A use-after-free vulnerability can occur during font face manipulation when a font face is freed while still in use, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
Published 2018-06-11 · Modified
9.8EPSS 0.072
CVE-2018-5102
A use-after-free vulnerability can occur when manipulating HTML media elements with media streams, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
Published 2018-06-11 · Modified
9.8EPSS 0.071
CVE-2013-5616
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 SeaMonkey before 2.23 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors related to mListeners event listeners.
Published 2013-12-11 · Modified
9.8EPSS 0.067
CVE-2014-1514
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 destination array before a copy operation, which allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds write and application crash) by triggering incorrect use of the TypedArrayObject class.
Published 2014-03-19 · Modified
9.8EPSS 0.061
CVE-2020-6831
A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Published 2020-05-26 · Modified
9.8EPSS 0.058
CVE-2014-1477
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 remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
Published 2014-02-06 · Modified
9.8EPSS 0.055
CVE-2017-7778
A number of security vulnerabilities in the Graphite 2 library including out-of-bounds reads, buffer overflow reads and writes, and the use of uninitialized memory. These issues were addressed in Graphite 2 version 1.3.10. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
Published 2018-06-11 · Modified
9.8EPSS 0.052
CVE-2018-18493
A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
Published 2019-02-28 · Modified
9.8EPSS 0.050
CVE-2014-1532
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 before 24.5, and SeaMonkey before 2.26 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors related to host resolution.
Published 2014-04-30 · Modified
9.8EPSS 0.046
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