CVE-2017-5421

CVE-2017-5421 is reported as a print preview spoofing issue affecting Mozilla Firefox and Mozilla Thunderbird when popup windows are enabled. The vulnerability description states that a malicious site could spoof the contents of the print preview window, causing user confusion about which site is...

CVE-2017-7749

This CVE-2017-7749 is a use-after-free in the docshell reload path that affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird

CVE-2017-7758

CVE-2017-7758 describes an out-of-bounds read in the Opus encoder when the number of channels in an audio stream changes during encoding. Affected products include Firefox < 54, Firefox ESR < 52.2, and Thunderbird

CVE-2021-29949

CVE-2021-29949 concerns Thunderbird and the OTR protocol library loading. The issue: during startup, Thunderbird may load a shared OTR library using a filename not distributed by Thunderbird. If a system already hosts a malicious copy of that alternative filename and the library is on the executa...

CVE-2026-8090

CVE-2026-8090 describes a use-after-free in Firefox’s DOM: Networking component. The issue is fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. The connected sources confirm the vulnerability class and the exact patched versions. The description does not specify affected c...

CVE-2009-1309

CVE-2009-1309 affects Mozilla Firefox (pre-3.0.9) and its related Mozilla suite components (Thunderbird, SeaMonkey). The issue arises from improper Same Origin Policy handling for XMLHttpRequest (document principal mismatch) and XPCNativeWrapper.toString (incorrect proto scope), enabling cross-si...

CVE-2018-5184

CVE-2018-5184 describes a vulnerability in Mozilla Thunderbird (affecting Thunderbird ESR < 52.8 and Thunderbird

CVE-2018-5185

CVE-2018-5185 is a vulnerability in Mozilla Thunderbird where plaintext of decrypted emails can leak through when a user submits an embedded form. The public descriptions specify the affected products as Thunderbird ESR < 52.8 and Thunderbird

CVE-2025-5986

CVE-2025-5986 affects Thunderbird. A crafted HTML email that uses mailbox:/// links can trigger automatic, unsolicited downloads of PDF files to the user’s desktop or home directory without prompting, even if auto-saving is disabled. This can lead to disk-space exhaustion and potential credential...

CVE-2012-5836

CVE-2012-5836 affects Mozilla Firefox (before 17.0), Mozilla Thunderbird (before 17.0), and SeaMonkey (before 2.14). The issue can allow remote code execution or an application crash when CSS properties are combined with SVG text, due to the root cause described by MFSA 2012-94. Public advisories...

CVE-2009-1308

CVE-2009-1308 is a cross-site scripting (XSS) vulnerability in Mozilla Firefox prior to 3.0.9, also affecting Thunderbird and SeaMonkey. The issue allows remote attackers to inject arbitrary web script or HTML via vectors involving XBL JavaScript bindings and remote stylesheets, with exploitation...

CVE-2009-3984

CVE-2009-3984 affects Mozilla Firefox up to 3.0.16 and Firefox 3.5.x up to 3.5.6, as well as SeaMonkey up to 2.0.1. Root cause: spoofing of the SSL indicator by navigating a document.location to an HTTPS URL that serves a 204 No Content with an empty body, enabling a user-facing location-bar spoo...

CVE-2013-5615

CVE-2013-5615 concerns GetElementIC typed array stubs being generated outside observed typesets in the Mozilla JavaScript engine. The connected vendor notes identify affected products as Mozilla Firefox (and related Firefox ESR/Thunderbird/SeaMonkey lines in the 2013 MFSA bundle) with fixes imple...

CVE-2018-5170

CVE-2018-5170 is a vulnerability in Mozilla Thunderbird (including ESR) where an attacker can spoof the filename of an attachment, causing a user to open a remote attachment with an arbitrary file type. Affected products include Thunderbird/Thunderbird ESR before version 52.8. The underlying issu...

CVE-2025-3522

Summary of CVE-2025-3522 (Thunderbird) : Thunderbird improperly processes the X-Mozilla-External-Attachment-URL header used for external attachments. When opening an email, Thunderbird fetches the URL to determine file size and may navigate to it when attaching is clicked. The URL is not validate...

CVE-2013-0773

CVE-2013-0773 corresponds to a vulnerability in the Chrome Object Wrapper (COW) and System Only Wrapper (SOW) security wrappers in Mozilla-based products. The issue allowed modifications to a prototype, enabling a non-specified remote site to access chrome objects or potentially execute JavaScrip...

CVE-2017-5413

CVE-2017-5413 : A segmentation fault can occur during bidirectional layout operations in Mozilla Firefox and Thunderbird. Affected products include Firefox and Thunderbird versions earlier than 52 (Firefox 52.x, Thunderbird 52.x) with the root cause described as a crash in bidirectional processin...

CVE-2018-12368

CVE-2018-12368 describes a policy bypass where Windows 10 does not warn before opening SettingContent-ms files, enabling a WebExtension with downloads.open to execute arbitrary code without user interaction. Connected advisories confirm the issue affects Windows 10 and Mozilla products (Thunderbi...

CVE-2012-3994

Mode C: CVE-2012-3994 affects Mozilla Firefox family and related Mozilla components (e.g., Firefox, Firefox ESR, Thunderbird, SeaMonkey). Root cause: use of Object.defineProperty to shadow the top object and interaction with top.location, enabling remote XSS via a binary plugin. Affected versions...

CVE-2012-4181

CVE-2012-4181 is a use-after-free in Mozilla Firefox's nsSMILAnimationController::DoSample that can lead to remote code execution or a denial of service (heap memory corruption). Affected products include Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunde...

CVE-2017-7752

CVE-2017-7752 is a use-after-free vulnerability triggered by specific user interactions with the input method editor (IME) in certain languages. The flaw is reported to affect Mozilla Firefox versions before 54, Firefox ESR before 52.2, and Thunderbird before 52.2. The impacted component is tied ...

CVE-2025-2830

Thunderbird vulnerability CVE-2025-2830: By crafting a malformed attachment filename in a multipart message, an attacker can coax Thunderbird into exposing a directory listing of /tmp when the message is forwarded or edited as a new message. This can lead to information disclosure from the victim...

CVE-2012-4213

The CVE-2012-4213 issue is a concrete use-after-free vulnerability in Mozilla codepath: nsEditor::FindNextLeafNode affects Firefox and related products. Affected components per the initial description are Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14, with remote...

CVE-2017-5418

CVE-2017-5418 is an out-of-bounds read error in parsing HTTP digest authorization responses, leading to information leakage. Affected products are Mozilla Firefox and Thunderbird prior to version 52.0. The issue is fixed in Firefox 52.0+ (and related Thunderbird updates per advisories), with reme...

CVE-2021-4126

The CVE-2021-4126 issue affects Thunderbird: when receiving an OpenPGP/MIME signed email with an outer MIME layer (e.g., mailing list footer), Thunderbird incorrectly treated inner content as signed. The root cause is that the displayed signature status was based on the inner part; since 91.4.1, ...

CVE-2025-3932

The CVE-2025-3932 issue concerns Thunderbird where an email could display a tracking link as an attachment; when opened, Thunderbird could access the external URL via the X-Mozilla-External-Attachment-URL header despite remote content blocking. Affected products: Thunderbird versions earlier than...

CVE-2026-7323

Memory safety bugs were reported in Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0, and Thunderbird 150.0.0, with evidence of memory corruption and the possibility that exploiting these could have permitted arbitrary code execution. These issues have been fixed in Firefox 150.0.1...

CVE-2012-5841

CVE-2012-5841 affects Mozilla Firefox (before 17.0), Firefox ESR (10.x before 10.0.11), Thunderbird (before 17.0), Thunderbird ESR (before 10.0.11) and SeaMonkey (before 2.14). The issue arises from cross-origin wrappers with a filtering behavior that fails to restrict write actions, enabling rem...

CVE-2013-0752

Technical details for CVE-2013-0752 are not publicly available in the provided documents. Monitor for updates from vendors and security advisories.

CVE-2015-0797

CVE-2015-0797 affects GStreamer up to 1.4.4 (GStreamer 1.4.x) when used by Mozilla Firefox before 38.0, Firefox ESR 31.x before 31.7, and Thunderbird before 31.7 on Linux. The flaw is a buffer over-read in H.264 video data processing in the GStreamer pipeline (m4v files) that can cause a denial o...

CVE-2016-5294

CVE-2016-5294 : The Mozilla Updater can select an arbitrary target working directory for update-output files, requiring local access and restricting impact to Windows. Affected: Thunderbird < 45.5, Firefox ESR < 45.5, Firefox

CVE-2017-5406

CVE-2017-5406 is a memory/segmentation fault in the Skia graphics library triggered during certain canvas operations due to issues with mask/clip intersection and empty masks. Affected products include Mozilla Firefox and Mozilla Thunderbird (Firefox/Thunderbird versions earlier than 52). The roo...

CVE-2026-7321

CVE-2026-7321 describes a sandbox escape vulnerability in the WebRTC: Networking component, caused by incorrect boundary conditions. Affected product is Firefox ESR; the issue was fixed in Firefox ESR 140.10.1. The NVD entry lists a HIGH/CRITICAL impact profile with network attack vector, requiri...

CVE-2022-3155

CVE-2022-3155 affects Mozilla Thunderbird and is described as: when saving or opening a mail attachment on macOS, Thunderbird failed to set the com.apple.quarantine attribute on the received file. If the file was an application, opening it could launch the application immediately without user con...

CVE-2012-3984

CVE-2012-3984 affects Mozilla Firefox (<16.0), Mozilla Thunderbird (<16.0), and SeaMonkey (

CVE-2013-0756

CVE-2013-0756 corresponds to a use-after-free in Mozilla Firefox’s obj_toSource path that can be triggered by a crafted web page referencing JavaScript Proxy objects, allowing remote code execution via standard web-visit attack vectors. Affected products include Firefox (pre-18.0), Firefox ESR 17...

CVE-2017-5422

CVE-2017-5422 describes a denial-of-service crash triggered by repeatedly using the view-source: protocol within a single hyperlink. The issue affects Mozilla Firefox and Thunderbird prior to version 52. The root cause is tied to how the view-source: protocol was handled in a chained hyperlink, a...

CVE-2017-7750

CVE-2017-7750 describes a use-after-free in video control operations when a element holds a reference to an older window that has been replaced in the DOM, leading to a potentially exploitable crash. Affected products and versions from the connected records include Mozilla Firefox < 54, Firef...

CVE-2020-15685

CVE-2020-15685 affects Thunderbird prior to 78.7. During the plaintext phase of STARTTLS, protocol commands could be injected and evaluated within the encrypted session. Affected product: Thunderbird (before 78.7). Root cause: insufficient validation during STARTTLS plaintext phase. Impact: poten...

CVE-2017-5412

CVE-2017-5412 is a buffer overflow read in SVG filter color value processing that results in data exposure. Affected products are Firefox and Thunderbird versions older than 52. The root cause is a memory safety/overflow issue in SVG filter handling. Remediation is to update to Firefox 52.0+ and ...

CVE-2017-7782

CVE-2017-7782 affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox

CVE-2017-5414

CVE-2017-5414 affects Mozilla Firefox (and Thunderbird) prior to version 52. The file picker dialog can instantiate and display the wrong local default directory, potentially disclosing OS or local account name. Remediation from connected docs: upgrade to Firefox 52.0+ (and Thunderbird 52.0+ as a...

CVE-2025-3875

CVE-2025-3875 affects Thunderbird. The issue arises from how Thunderbird parses addresses, allowing sender spoofing if the server permits an invalid From address; e.g., a From header value like "Spoofed Name" can cause the address to appear as [email protected]. Impact is spoofing of From: head...

CVE-2012-1938

CVE-2012-1938 affects Mozilla's browser engine and is described in the MiracleLinux AXSA:2012-857 advisory as multiple vulnerabilities in Firefox (and related components) that could allow memory corruption and remote code execution. Specifically, it impacts Mozilla Firefox before 13.0, Thunderbir...

CVE-2012-3988

CVE-2012-3988 is a use-after-free vulnerability in Mozilla Firefox (pre-16.0), Firefox ESR (pre-10.0.8), Thunderbird (pre-16.0), Thunderbird ESR (pre-10.0.8), and SeaMonkey (pre-2.13). It can be triggered via mozRequestFullScreen with full-screen mode and navigation via history.back, potentially ...

CVE-2012-3995

CVE-2012-3995 affects Mozilla Firefox and related Mozilla applications. The vulnerability arises from the IsCSSWordSpacingSpace function in Firefox (and Firefox ESR 10.x, Thunderbird, SeaMonkey as listed) where an out-of-bounds read could be exploited to run arbitrary code or trigger a denial-of-...

CVE-2012-5830

CVE-2012-5830 is a use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X that allows remote attackers to execute arbitrary code via an HTML document. The con...

CVE-2013-0767

CVE-2013-0767 affects Mozilla Firefox (and related Mozilla components) with the nsSVGPathElement::GetPathLengthScale path handling. The vulnerability allows remote attackers to execute arbitrary code or cause a denial of service via an out-of-bounds read, reported for Firefox before 18.0, ESR 10....

CVE-2013-0774

CVE-2013-0774 affects Mozilla Firefox

CVE-2017-5426

CVE-2017-5426: On Linux, when seccomp-bpf is active as Gecko Media Plugin sandbox starts, the sandbox may fail to initialize, leaving code that would run in the sandbox only protected by a weaker filter. Affected products are Firefox < 52 and Thunderbird < 52 (Linux only). This can enable s...