CVE-2021-23982

CVE-2021-23982 is a concrete WebRTC-based information-disclosure vulnerability affecting Mozilla products. The connected documents confirm that a malicious webpage could probe an internal network’s hosts and services running on the user’s machine via WebRTC. Affected products/versions: Firefox ES...

CVE-2021-29985

CVE-2021-29985 is a use-after-free in media channels causing memory corruption, affecting Thunderbird (versions < 78.13 and < 91), Firefox ESR (<78.13) and Firefox (

CVE-2021-23953

CVE-2021-23953 concerns an information-disclosure vulnerability in the PDF handling of Mozilla Firefox (before 85.0) and Thunderbird (before 78.7), plus Firefox ESR before 78.7. The issue arises when a user opens a specially crafted PDF, which could leak cross-origin data served as chunked data. ...

CVE-2025-0247

CVE-2025-0247 concerns memory safety bugs in Mozilla Firefox 133 and Thunderbird 133, with impact on Firefox < 134 and Thunderbird

CVE-2019-11692

CVE-2019-11692 is a use-after-free in the event listener manager that can occur when listeners are removed while still in use, causing a crash in Thunderbird <=60.6.x/60.7.0, Firefox <=66-67 (and ESR

CVE-2024-10459

CVE-2024-10459 is a use-after-free vulnerability triggered when accessibility features are enabled, potentially causing a crash. The issue affects Firefox versions earlier than 132, Firefox ESR prior to 128.4 and 115.17, and Thunderbird versions earlier than 132 or 128.4, as noted across multiple...

CVE-2019-11698

CVE-2019-11698 concerns theft of browser history via drag-and-drop of crafted hyperlinks to bookmarks that are dragged into web content. Public documents confirm affected products and versions: Thunderbird < 60.7, Firefox < 67, and Firefox ESR

CVE-2020-6814

CVE-2020-6814 refers to memory-safety bugs in Mozilla Firefox and Thunderbird (68.5 timeframe) with potential to run arbitrary code. Affected products/versions: Thunderbird < 68.6, Firefox < 74, Firefox ESR < 68.6, and Firefox ESR

CVE-2024-5690

Vulnerability CVE-2024-5690 affects Mozilla Firefox and Thunderbird components via a timing-attack on external protocol handler detection. Affected products explicitly include Firefox < 127, Firefox ESR < 115.12, and Thunderbird

CVE-2024-5691

The CVE-2024-5691 entry describes a vulnerability where an attacker could trick a sandboxed iframe using an X-Frame-Options header to present a button that, if clicked, bypasses sandbox restrictions and opens a new window. Affected products (per the provided documents) include Mozilla Firefox and...

CVE-2009-0652

CVE-2009-0652 describes an IDN spoofing vulnerability where the IDN blacklist in Mozilla Firefox (and related Mozilla apps) failed to exclude box-drawing characters, enabling homoglyph-based phishing in subdomains of a .cn domain. Affected products include Firefox 3.0.6 (and others prior to 3.0.9...

CVE-2019-9788

CVE-2019-9788 affects Mozilla Thunderbird and Firefox components via memory-safety bugs that could allow arbitrary code execution. The provided documents identify memory-corruption opportunities in Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox

CVE-2020-6806

CVE-2020-6806 is a memory-safety bug causing an out-of-bounds read during promise resolution that could lead to memory corruption and a potentially exploitable crash. The vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox ESR < 68.6, and Firefox ESR

CVE-2020-6825

CVE-2020-6825 is a memory-safety issue in Mozilla Firefox/Thunderbird affecting Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox

CVE-2024-4768

CVE-2024-4768 involves a bug in the interaction between popup notifications and WebAuthn that could enable a user-permission bypass in the affected Mozilla products. The concrete impact described in connected advisories applies to Firefox and Firefox ESR (and Thunderbird): an attacker could trick...

CVE-2024-5692

The CVE-2024-5692 entry affects Mozilla Firefox and Thunderbird on Windows 10, where the Save As flow could bypass filename extension restrictions by including an invalid character in the extension, enabling saving with a disallowed extension like .url. Connected Mozilla advisories (MFSA) corrobo...

CVE-2025-1020

The CVE-2025-1020 entries concern memory safety bugs in Mozilla Firefox 134 and Thunderbird 134. The connected sources confirm memory-safety issues that could lead to memory corruption, with the potential to execute arbitrary code, and apply to Firefox versions before 135 and Thunderbird versions...

CVE-2019-11730

CVE-2019-11730 describes a same-origin policy violation where opening a locally saved HTML file could allow file: URIs to access files in the same directory or subdirectories, enabling the Fetch API to read contents and potentially exfiltrate them. The issue affects Firefox ESR < 60.8, Firefox...

CVE-2020-15664

The CVE-2020-15664 issue arises from a malicious page holding a reference to eval() from an about:blank window, allowing access to InstallTrigger and prompting users to install an extension. Affected products include Firefox < 80, Thunderbird < 78.2/68.12, Firefox ESR < 68.12/78.2, and F...

CVE-2021-29986

CVE-2021-29986 describes a race condition in getaddrinfo that can cause memory corruption and a potentially exploitable crash on Linux. Affected products include Thunderbird and Firefox variants: Thunderbird < 78.13 and < 91, Firefox ESR < 78.13, and Firefox

CVE-2021-29988

The CVE-2021-29988 issue is a memory safety vulnerability in Mozilla code where Firefox incorrectly treated an inline list-item as a block element, leading to an out-of-bounds read or memory corruption and a potentially exploitable crash. Affected products and versions: Thunderbird < 78.13 and...

CVE-2021-4140

CVE-2021-4140 is a vulnerability where crafted XSLT markup could bypass the iframe sandbox, affecting Mozilla Firefox/Thunderbird products. Connected advisories consistently describe an iframe sandbox bypass with XSLT as the issue (CVE-2021-4140) and document affected versions such as Firefox ESR...

CVE-2024-11692

CVE-2024-11692 describes a spoofing-related issue in Mozilla Firefox/Thunderbird where a select dropdown could be rendered over another tab, causing user confusion. The vulnerability affects Firefox versions before 133, Firefox ESR before 128.5, Thunderbird before 133, and Thunderbird before 128....

CVE-2025-1017

CVE-2025-1017: Memory-safety bugs in Firefox 134/THUNDERBIRD 134 (and related ESR) with potential for arbitrary code execution. Affects Firefox <135, Firefox ESR <128.7, Thunderbird

CVE-2019-11715

CVE-2019-11715: HTML parsing error can contribute to content XSS. Affected: Firefox ESR <60.8, Firefox <68, Thunderbird

CVE-2020-6831

CVE-2020-6831 is a bug described in Debian security advisories as a buffer overflow in the SCTP chunk input validation in the usrsctp library. The Debian entries explicitly tie this CVE to Firefox ESR (<68.8), Firefox (<76) and Thunderbird (

CVE-2024-5702

The CVE-2024-5702 entry is confirmed with concrete details in connected advisories: memory corruption in the networking stack affecting Mozilla Firefox before 125, Firefox ESR before 115.12, and Thunderbird before 115.12. The root cause is memory corruption in the networking component, potentiall...

CVE-2024-6614

CVE-2024-6614 impacts Mozilla Firefox and Thunderbird before version 128, where the frame iterator could loop when processing certain wasm frames, causing incorrect stack traces. The issue, confirmed in Mozilla advisories, is addressed by upgrading to the 128.* release series (Firefox 128 / Thund...

CVE-2021-29984

CVE-2021-29984 involves instruction reordering that allowed a GC-related object misevaluation, causing memory corruption and potentially exploitable crashes in Mozilla components. Affected products include Thunderbird and Firefox ESR/Firefox releases prior to 78.13/91; the exploit would require m...

CVE-2022-34478

Summary: CVE-2022-34478 affects Thunderbird on Windows, where the ms-msdt, search, and search-ms protocols could deliver content to Microsoft apps via prompts opened by user interaction. The underlying risk is exploitation of a prompt-based handling in these protocols that bypasses the browser. T...

CVE-2024-6611

In CVE-2024-6611, a nested iframe could trigger cross-site navigation and allow cookies with SameSite=Strict or Lax to be sent. Affected products are Mozilla Firefox and Thunderbird prior to version 128. root cause: improper handling of SameSite cookies in nested iframes; impact includes potentia...

CVE-2025-0240

CVE-2025-0240 affects Mozilla Firefox and Thunderbird (Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, Thunderbird

CVE-2019-11743

CVE-2019-11743 describes cross-origin access to unload event attributes, enabling timing-side-channel exposure of history in certain browsers. Connected docs confirm affected products and versions, with fixes noted in Thunderbird updates (e.g., Thunderbird 60.9.0) and Firefox/ESR advisories addre...

CVE-2019-9813

CVE-2019-9813 describes an IonMonkey JIT type confusion caused by incorrect handling of proto mutations, enabling potential arbitrary memory read/write. Affected products include Firefox prior to 66.0.1, Firefox ESR prior to 60.6.1, and Thunderbird prior to 60.6.1. The underlying issue is a type-...

CVE-2020-12406

CVE-2020-12406 involves a missing type check during unboxed objects removal in Mozilla code, leading to a crash that could be exploited to run arbitrary code. Affected products/versions from the provided documents include Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR

CVE-2021-29969

Thunderbird is affected by CVE-2021-29969: when STARTTLS is used for IMAP, an attacker injecting IMAP responses before TLS completion could cause Thunderbird to display spoofed information (e.g., folders that don’t exist). Affects Thunderbird versions older than 78.12. The issue originates from n...

CVE-2024-6603

The CVE-2024-6603 entry describes an out-of-memory scenario where an allocation can fail but the pointer is free’d afterward, leading to memory corruption. Affected software: Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird

CVE-2025-1016

CVE-2025-1016 corresponds to memory-safety bugs in Firefox 134/Thunderbird 134 (and ESR lines) that could allow arbitrary code execution. Affected: Firefox <135, Firefox ESR <115.20/128.7, Thunderbird

CVE-2018-18505

CVE-2018-18505 concerns an IPC privilege-escalation in Mozilla products where an authentication added during IPC process creation is not applied to channels created later, enabling potential sandbox escape through IPC channels. Public advisories tie this to Thunderbird and Firefox releases prior ...

CVE-2019-11693

CVE-2019-11693 describes a Linux-specific buffer overflow in WebGL’s bufferdata, affecting Thunderbird and Firefox (Thunderbird <60.7, Firefox <67, ESR

CVE-2019-9796

CVE-2019-9796 is a use-after-free in the SMIL animation controller where double registration with the refresh driver leads to a dangling pointer after the controller is removed. Affected products include Thunderbird and Firefox (Firefox ESR < 60.6, Firefox

CVE-2021-23981

CVE-2021-23981 describes a memory-safety issue in WebGL where uploading a Texture into a Pixel Buffer Object could confuse WebGL and skip binding the buffer used to unpack it, leading to an out-of-bounds read and potential information leak or crash. Affected software includes Firefox ESR < 78....

CVE-2021-24002

CVE-2021-24002 is a vulnerability observed in Firefox before 88 and Thunderbird before 78.10 where clicking an FTP URL containing encoded newline characters (%0A, %0D) could cause the server to interpret newlines and execute arbitrary commands. Affected products include Firefox ESR < 78.10, Fi...

CVE-2021-29976

CVE-2021-29976 is a memory-safety issue affecting Mozilla code shared by Firefox and Thunderbird. The advisory details indicate memory-safety bugs that could be exploited to run arbitrary code, impacting Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox

CVE-2025-1011

CVE-2025-1011 is a WebAssembly code-generation bug that could crash the affected Mozilla components and, per the connected advisories, may enable remote code execution. Public references indicate the vulnerability affects Firefox up to version 135 (and ESR 128.7) and Thunderbird up to 128.7 (and ...

CVE-2019-17011

CVE-2019-17011 : A race condition in DocShell antitracking can cause a use-after-free and potentially crash the process. Affected: Thunderbird < 68.3, Firefox ESR < 68.3, Firefox

CVE-2020-15683

CVE-2020-15683 : Mozilla Firefox and Thunderbird memory-safety issues reported affecting Firefox ESR < 78.4, Firefox < 82, and Thunderbird

CVE-2021-23984

The CVE-2021-23984 entry describes a vulnerability in which a malicious extension could open a popup window without an address bar, allowing spoofing of a site and credential theft. Affected products include Firefox ESR < 78.9, Firefox < 87, and Thunderbird

CVE-2021-38508

CVE-2021-38508 is a vulnerability affecting Mozilla products where a form validity message shown in the same location as a permission prompt (e.g., geolocation) can obscure the prompt, potentially tricking users into granting permissions. Affected: Firefox < 94, Thunderbird < 91.3, and Fire...

CVE-2021-43537

CVE-2021-43537: An incorrect type conversion of sizes from 64-bit to 32-bit integers causes a heap buffer overflow during structured cloning, leading to memory corruption and potentially exploitable crashes. Affected: Firefox before 95 and Thunderbird before 91.4.0. Remediation: upgrade to Firefo...