CVE-2026-16410

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

CVE-2026-74947

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-74962

A site isolation issue exists in the Networking: Cookies component of the Mozilla Firefox and Mozilla Thunderbird browsers. This vulnerability affects various versions, including Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1. The is...

CVE-2026-74985

Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVE-2026-84140

CVE-2026-84140 is a site isolation issue in the DOM: Navigation component affecting Mozilla Firefox , Firefox ESR , Thunderbird , and Thunderbird ESR . Per Kaspersky analysis, this vulnerability enables remote code execution when exploited, allowing arbitrary code to run on the target system. The...

CVE-2006-1740

CVE-2006-1740 affects Mozilla-derived browsers, allowing remote attackers to spoof secure site indicators (e.g., the lock icon) by abusing a popup window that loads the trusted site and then navigates to a malicious site. Affected products include Firefox 1.x prior to 1.5 and 1.0.x prior to 1.0.8...

CVE-2006-6500

CVE-2006-6500 describes a heap-based buffer overflow in Mozilla-related products. A remote attacker could crash the application or possibly execute arbitrary code by crafting CSS cursor images that trigger an incorrect Windows bitmap size calculation during conversion. Affected software per the d...

CVE-2007-4038

Technical details for CVE-2007-4038 are not present in the provided Connected documents. The initial description mentions a mailto: argument-injection issue in Firefox/Thunderbird but lacks product/version/patch specifics. Monitor for updates.

CVE-2008-0420

The CVE-2008-0420 issue affects Mozilla Firefox (before 2.0.0.12), Mozilla Thunderbird (before 2.0.0.12), and SeaMonkey (before 1.1.8). It stems from incorrect calculations in the BMP decoder (nsBMPDecoder.cpp) related to the mColors table for 8-bit BMPs, enabling an out-of-bounds read of heap me...

CVE-2012-5843

CVE-2012-5843 affects Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14. The vulnerability is described as unspecified memory safety hazards in the browser engine that could lead to memory corruption and a crash (DoS) or, potentially, arbitrary code execution via unk...

CVE-2026-12325

A Denial-of-service vulnerability exists in the Graphics: ImageLib component of Mozilla products, including Firefox and Thunderbird . Attackers can exploit this flaw to cause a denial-of-service attack. This issue has been addressed in Firefox 152 , Firefox ESR 140.12 , Firefox ESR 115.37 , Thund...

CVE-2026-16372

Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

CVE-2026-2761

CVE-2026-2761 is a sandbox-escape vulnerability in the Graphics: WebRender component of Mozilla Firefox/Thunderbird. The issue is fixed in Firefox 148, Firefox ESR 115.33 and 140.8, as well as Thunderbird 148 and Thunderbird 140.8 per the provided advisories. Connected documents confirm this exac...

CVE-2026-6755

The Mozilla Firefox web browser and Mozilla Thunderbird email client are affected by a mitigation bypass in the DOM: postMessage component. This vulnerability allows a malicious actor to remotely trigger a service failure . The issue has been resolved in Firefox 150 and Thunderbird 150 . Exploita...

CVE-2026-74960

A site isolation issue exists in the WebExtensions component of the Mozilla Firefox and Thunderbird browsers. This vulnerability has been addressed in Firefox 154 , Firefox ESR 140.14 , Firefox ESR 153.1 , Thunderbird 154 , Thunderbird 140.14 , and Thunderbird 153.1 . No specific details regardin...

CVE-2026-8946

The Audio/Video: Web Codecs component in the Firefox web browser and Thunderbird email client is susceptible to a vulnerability caused by incorrect boundary conditions . This flaw allows a remote attacker to perform arbitrary code execution by triggering operations outside the buffer in memory. T...

CVE-2006-1530

Technical details for CVE-2006-1530 are not publicly available in the provided documents. Monitor for updates.

CVE-2006-3812

CVE-2006-3812 affects Mozilla Firefox prior to 1.5.0.5, Thunderbird prior to 1.5.0.5, and SeaMonkey prior to 1.0.3. The flaw allows a remote attacker to trick a user into copying or dragging a link to reference remote files and potentially load chrome: URLs, leading to partial confidentiality/int...

CVE-2006-6498

CVE-2006-6498 is a vulnerability in the JavaScript engine affecting multiple Mozilla-era products (Firefox, SeaMonkey, Thunderbird) that could lead to memory corruption, crash, and potential remote code execution. Public advisories indicate fixes are delivered through updated Firefox/SeaMonkey/Th...

CVE-2010-1201

CVE-2010-1201 affects Mozilla Firefox 3.5.x before 3.5.10, Thunderbird before 3.0.5, and SeaMonkey before 2.0.5. The vulnerability is described as an unspecified memory corruption in the browser engine that could allow a remote attacker to cause a denial of service or potentially execute arbitrar...

CVE-2011-3001

CVE-2011-3001 affects Mozilla Firefox 4.x–6, Thunderbird before 7.0, and SeaMonkey before 2.4. The issue allows a user-assisted remote bypass of access restrictions by triggering an internal error on a crafted site that triggers adding a browser extension through a holding Enter key sequence. The...

CVE-2012-4179

CVE-2012-4179 is a use-after-free in Mozilla Firefox's nsHTMLCSSUtils::CreateCSSPropertyTxn that can lead to code execution or heap memory corruption. Affected are Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey befor...

CVE-2012-4195

CVE-2012-4195 concerns Mozilla Firefox (and related Mozilla components) where nsLocation::CheckURL does not correctly determine the calling document/principal, enabling cross-site scripting (XSS) via crafted sites and certain add-on behaviors. Affected products/versions include Firefox before 16....

CVE-2026-16392

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

CVE-2026-5731

Memory safety bugs in Firefox and Thunderbird (including ESR versions) could allow an attacker to execute arbitrary code via memory corruption. The issue affects Firefox < 149.0.2 , Firefox ESR < 115.34.1 , Firefox ESR < 140.9.1 , Thunderbird < 149.0.2 , and Thunderbird

CVE-2026-6759

A use-after-free vulnerability exists in the Widget: Cocoa component of Mozilla Firefox , Firefox ESR , and the Thunderbird email client. An attacker could exploit this memory safety issue to compromise the accessibility of protected information . The vulnerability has been addressed in Firefox 1...

CVE-2026-6763

A mitigation bypass exists in the File Handling component of Mozilla Firefox and the Thunderbird email client. This vulnerability allows an attacker to circumvent existing security restrictions remotely due to a violation of data protection mechanisms. The issue is fixed in Firefox 150 , Firefox ...

CVE-2026-74965

A privilege escalation vulnerability exists in the Shell Integration component of the Mozilla Firefox and Mozilla Thunderbird browsers. The vulnerability has been addressed in the following versions: Firefox 154 , Firefox ESR 140.14 , Firefox ESR 153.1 , Thunderbird 154 , Thunderbird 140.14 , and...

CVE-2026-84136

CVE-2026-84136 is a remote code execution vulnerability in the DOM: Navigation component of Mozilla products, affecting Firefox (before 155), Firefox ESR (before 153.2), Thunderbird (before 155), and Thunderbird ESR (before 153.2). Per Kaspersky, it can be exploited remotely to execute arbitrary ...

CVE-2006-6502

CVE-2006-6502 is a use-after-free vulnerability in the LiveConnect bridge code affecting Mozilla Firefox 2.x (before 2.0.0.1), Mozilla Firefox 1.5.x (before 1.5.0.9), SeaMonkey (before 1.0.7), and Thunderbird (before 1.5.0.9). It allows remote attackers to cause a crash (denial of service) via un...

CVE-2009-2465

CVE-2009-2465 affects Mozilla Firefox before 3.0.12 and Thunderbird. The vulnerability allows remote memory corruption and potential code execution via double frame construction, tied to nsHTMLContentSink.cpp, nsXMLContentSink.cpp, nsPresShell.cpp, and the nsSubDocumentFrame::Reflow function. Mir...

CVE-2013-1672

CVE-2013-1672 affects Mozilla Firefox on Windows (and related Thunderbird/ESR components) where the Mozilla Maintenance Service can be exploited to bypass integrity verification and escalate privileges. The issue is tied to local privilege escalation via manipulation of data passed to the mainten...

CVE-2025-3032

The Mozilla Firefox browser and Mozilla Thunderbird email client are affected by a vulnerability involving a file descriptor leak from the fork server to web content processes. This flaw could allow an attacker to perform privilege escalation attacks. The issue is present in versions prior to 137...

CVE-2026-2758

CVE-2026-2758 is a memory-safety use-after-free in the Mozilla Firefox JavaScript GC component. Public details show it affects Firefox and Thunderbird families and was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Multiple connected advisorie...

CVE-2026-74983

Mitigation bypass in the Data Loss Prevention component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVE-2026-84133

A site isolation issue exists in the DOM: Push Subscriptions component of the Firefox and Thunderbird browsers. This vulnerability affects the following versions: Firefox 155 , Firefox ESR 153.2 , Thunderbird 155 , and Thunderbird 153.2 . The issue has been addressed in these released versions. N...

CVE-2026-84143

CVE-2026-84143 covers internally found bugs in Thunderbird 154 , Thunderbird ESR 153.1 , and Thunderbird ESR 140.14 , some showing evidence of memory corruption or other security-relevant defects. Mozilla presumes some could have been exploited with enough effort, but no confirmed in-the-wild exp...

CVE-2004-1449

CVE-2004-1449 affects Mozilla before 1.7, Firefox before 0.9, and Thunderbird before 0.7. The root cause is a user interaction trap where a malicious site obscures a file upload control and tricks the user into dragging text into it, enabling an attacker to determine the location of files on the ...

CVE-2006-0236

The CVE-2006-0236 entry concerns Mozilla Thunderbird 1.0.2, 1.0.6, and 1.0.7. A GUI display truncation allows user-assisted attackers to execute arbitrary code via an attachment whose filename contains a large number of spaces and ends with a dangerous extension that Thunderbird does not display,...

CVE-2012-1941

CVE-2012-1941 corresponds to a heap-based buffer overflow in Mozilla Firefox/Thunderbird/SeaMonkey components (nsHTMLReflowState::CalculateHypotheticalBox) that can be triggered when resizing a window displaying absolutely positioned and relatively positioned elements in nested columns. Affected ...

CVE-2012-3974

CVE-2012-3974 is an Untrusted search path vulnerability in the installer for Mozilla Firefox (pre-15.0) and Thunderbird (pre-15.0; ESR 10.x) on Windows. Root cause: Trojan horse executable in a root directory enables local privilege escalation. Affected: Firefox before 15.0, Firefox ESR before 10...

CVE-2026-12327

Memory safety bugs exist in Firefox ESR 140.11 , Thunderbird ESR 140.11 , Firefox 151 , and Thunderbird 151 . These vulnerabilities involved memory corruption , which could potentially be exploited with sufficient effort to execute arbitrary code . The issues have been addressed in the following ...

CVE-2026-16361

Mozilla Thunderbird and Firefox ESR are affected by memory safety bugs that can lead to memory corruption . If successfully exploited, these vulnerabilities could allow an attacker to execute arbitrary code . The issues were addressed in Thunderbird 140.13 , Firefox ESR 115.38 , and Firefox ESR 1...

CVE-2026-74964

An integer overflow vulnerability exists in the Graphics component of the Mozilla Firefox and Mozilla Thunderbird applications. This flaw was addressed in the release of Firefox 154 , Firefox ESR 140.14 , Firefox ESR 153.1 , Thunderbird 154 , Thunderbird 140.14 , and Thunderbird 153.1 . While spe...

CVE-2026-84134

This vulnerability affects the Profile Backup component in Mozilla Firefox and Mozilla Thunderbird . The root cause is described as an other issue within that specific component. Impact details are not explicitly provided in the documents, but the severity is rated as CRITICAL (CVSS 3.1 score of ...

CVE-2026-84137

CVE-2026-84137 involves a spoofing issue within the DOM: Core & HTML component . This vulnerability affects Mozilla Firefox and Mozilla Thunderbird . The issue has been addressed in Firefox 155 , Firefox ESR 153.2 , Thunderbird 155 , and Thunderbird 153.2 . No specific exploit details or remote e...

CVE-2007-1282

CVE-2007-1282 is a reported integer/buffer overflow in Mozilla Thunderbird (pre-1.5.0.10) and SeaMonkey (pre-1.0.8) triggered by extremely long lines in text/enhanced or text/richtext emails, allowing potential remote code execution. Connected advisories (Red Hat RHSA-2007:0108/0078/0077 and rela...

CVE-2008-0413

CVE-2008-0413 affects the JavaScript engine in Mozilla Firefox < 2.0.0.12, Thunderbird < 2.0.0.12, and SeaMonkey

CVE-2009-3982

The CVE-2009-3982 entry concerns Mozilla Firefox 3.5.x before 3.5.6, SeaMonkey before 2.0.1, and Thunderbird, where exposure is via the JavaScript engine. The connected documents confirm a memory-corruption impact in the JS engine that could allow remote code execution or a crash, caused by unspe...

CVE-2010-3181

CVE-2010-3181 pertains to an untrusted search path (DLL loading) vulnerability in Mozilla Firefox (pre-3.5.14), Firefox 3.6.x (pre-3.6.11), Thunderbird (pre-3.0.9 and pre-3.1.5), and SeaMonkey (pre-2.0.9) on Windows. The root cause is Trojan horse DLLs loaded from the current working directory, e...