CVE-2020-12424

Vulnerability CVE-2020-12424 affects Firefox earlier than 78, where a WebRTC permission prompt could be bypassed if a URI from the content process was untrusted and potentially the origin that had been previously granted permission. Connected advisories and vendor updates indicate this issue was ...

CVE-2023-4577

CVE-2023-4577 is a memory-corruption issue in the Firefox/Thunderbird code path where UpdateRegExpStatics could access initialStringHeap after it had been garbage collected, potentially causing an exploitable crash. Connected advisories corroborate that affected products include Firefox versions ...

CVE-2013-0758

CVE-2013-0758 affects Mozilla Firefox (pre-18.0), Firefox ESR (pre-10.0.12 and pre-17.0.2), Thunderbird (pre-17.0.2, including ESR 10.x pre-10.0.12 and pre-17.0.2), and SeaMonkey (pre-2.15). It allows remote attackers to execute arbitrary JavaScript with chrome privileges due to improper interact...

CVE-2020-12422

CVE-2020-12422 affects Mozilla Firefox (non-standard configurations). The root cause is an integer overflow in nsJPEGEncoder::emptyOutputBuffer when handling a JPEG image created by JavaScript, leading to an out-of-bounds write and memory corruption that could cause a crash. The vulnerability is ...

CVE-2021-38497

CVE-2021-38497 describes a UI spoofing issue caused by using reportValidity() together with window.open(), which could overlay a plain-text validation message on another origin. Affected software versions are Firefox < 93, Thunderbird < 91.2, and Firefox ESR

CVE-2023-5172

CVE-2023-5172 affects Mozilla Firefox versions earlier than 118. The vulnerability arises from a hashtable in the Ion Engine being mutated while a live interior reference exists, causing a use-after-free and a potentially exploitable crash. The issue is described as impacting Firefox

CVE-2019-9801

CVE-2019-9801 affects Mozilla Firefox and Thunderbird on Windows. The issue allows Firefox/Thunderbird to treat any registered Program ID as an external protocol handler and offer to launch a local application when a matching URL is opened, even if the program is not intended as a URL handler. Ro...

CVE-2020-12416

CVE-2020-12416 describes a use-after-free in the WebRTC path where VideoStreamEncoder may be freed in a race with VideoBroadcaster::AddOrUpdateSink, causing memory corruption and a potentially exploitable crash. The vulnerability affects Mozilla Firefox releases before 78. The issue is mitigated ...

CVE-2023-5174

The CVE-2023-5174 entry describes a Windows-specific issue in the Firefox sandbox handling: if a process fails to duplicate a handle during process creation, the sandbox code may double-free a pointer, causing a use-after-free and potentially an exploitable crash. Affected products are Firefox be...

CVE-2011-0084

CVE-2011-0084 affects Mozilla Firefox prior to 3.6.20 and 4.x–5, Thunderbird 3.x prior to 3.1.12 and other versions before 6, SeaMonkey 2.x before 2.3, and possibly other Mozilla products. The underlying issue is in SVGTextElement.getCharNumAtPosition where SVG text is not handled correctly, allo...

CVE-2019-11735

CVE-2019-11735 is a memory-safety bug in Firefox/Firefox ESR before version 69.0 and 68.1 respectively, with Mozilla noting memory corruption and potentially arbitrary code execution. Public sources (Arch Linux ASA-201909-2, FreeBSD Vuxml, Debian/IBM OS bulletins) confirm it as a Firefox vulnerab...

CVE-2019-11749

CVE-2019-11749 describes an information-disclosure vulnerability in WebRTC: malicious content can probe the getUserMedia constraints to reveal camera device properties without user prompt, enabling potential user fingerprinting. Affected products are Firefox prior to 69 and Firefox ESR prior to 6...

CVE-2019-9815

CVE-2019-9815 describes a timing-attack similar to Spectre when hyperthreading is not disabled. Affected: macOS content threads (macOS 10.14.5 introduces a sysctl option to disable hyperthreading for untrusted code on the main or worker JavaScript threads), and affected Firefox/Thunderbird versio...

CVE-2023-4053

The CVE-2023-4053 issue describes a UI spoofing risk where a website could obscure a full-screen notification by using a URL scheme handled by an external program (e.g., mailto). Affected products: Mozilla Firefox (non-ESR) and Thunderbird prior to certain versions; specifically Firefox <116, ...

CVE-2023-4575

CVE-2023-4575 describes a memory safety risk in Mozilla components where IPC FilePickerShownCallback could suffer a use-after-free due to multiple identical callbacks being created and destroyed concurrently during File Picker window invocation. Affected products include Firefox (all listed varia...

CVE-2019-11724

CVE-2019-11724 affects Mozilla Firefox prior to version 68. The issue is an access restriction bypass caused by application permissions that granted an unnecessary remote troubleshooting permission to input.mozilla.org, which has since retired and redirects elsewhere. Impact described across conn...

CVE-2019-9818

CVE-2019-9818 is a use-after-free in the crash generation server used by Mozilla Firefox/Thunderbird on Windows. The issue, described as a race condition in the crash reporter server, can lead to a potentially exploitable crash and sandbox escape. Public references indicate the vulnerability affe...

CVE-2020-12426

CVE-2020-12426 references memory-safety bugs in Firefox 77 that could potentially allow arbitrary code execution and affect Firefox versions earlier than 78. The connected advisories consistently indicate that fixes were implemented in Firefox 78 (and Thunderbird-related components) and that this...

CVE-2017-5460

CVE-2017-5460 is a use-after-free in Firefox/Thunderbird frame selection. Public docs confirm it affects Firefox/Firefox ESR (before 53) and Thunderbird (older branches) with a potentially exploitable crash and, in some advisories, possible arbitrary code execution. Root cause: use-after-free dur...

CVE-2021-29981

CVE-2021-29981 affects Firefox < 91 and Thunderbird

CVE-2023-29539

Concrete details found: CVE-2023-29539 (Content-Disposition filename truncation on NULL) affects Firefox family and Thunderbird; root cause is NULL character in filename causing truncation and potential Reflected File Download. Connected documents (Astra Linux bulletin, Debian/CentOS advisories) ...

CVE-2020-12425

CVE-2020-12425 affects Firefox: a one-byte out-of-bounds read in Date.parse() due to hyphen processing could disclose information. Affected product line is Firefox before version 78. Several connected advisories confirm this issue alongside other CVEs and show that fixes were included in subseque...

CVE-2023-6135

CVE-2023-6135 corresponds to a Minerva side-channel vulnerability affecting NSS and Firefox, potentially enabling private-key recovery. The primary affected component is NSS NIST curves; Firefox versions before 121 are listed as affected. Public documents indicate remediation through updated NSS ...

CVE-2025-4918

The Firefox and Thunderbird web browsers are vulnerable to an out-of-bounds read or write on a JavaScript Promise object. This memory safety issue is present in Firefox versions prior to 138.0.4, Firefox ESR versions prior to 128.10.1 and 115.23.1, and Thunderbird versions prior to 128.10.2. The ...

CVE-2016-2834

CVE-2016-2834 concernsMozilla Network Security Services (NSS), as used in Mozilla Firefox, with NSS versions before 3.23. Exploitation can lead to remote code execution, memory corruption, or denial of service, per connected IBM advisories. Relevant IBM records show NSS in various IBM products (P...

CVE-2015-7183

CVE-2015-7183 is an integer overflow in the PL_ARENA_ALLOCATE path of Netscape Portable Runtime (NSPR) used by NSS. Affected NSS/NSPR versions include NSS prior to 3.19.2.1 and 3.20.x prior to 3.20.1 (as used by Firefox before 42.0 and Firefox ESR 38.x before 38.4, among others). The flaw may all...

CVE-2020-6826

CVE-2020-6826 affects Mozilla Firefox before version 75.0. The issue stems from memory-safety bugs in Firefox 74 that could lead to memory corruption and arbitrary code execution with a remote attack surface (no user interaction required). The Arch Linux advisory ASA-202004-8 provides remediation...

CVE-2023-4582

CVE-2023-4582 is a Firefox-on-macOS-specific issue where large allocation checks in Angle for GLSL shaders could overflow a private shader memory allocation, leading to a buffer overflow. The vulnerability affects Firefox versions earlier than 117 (and Firefox ESR < 115.2, Thunderbird

CVE-2023-5730

The CVE-2023-5730 entry concerns memory safety bugs in Mozilla Firefox (Firefox 118 and ESR 115.3) and Thunderbird 115.3 that could allow arbitrary code execution. Affected versions are Firefox < 119, Firefox ESR < 115.4, and Thunderbird

CVE-2017-5390

CVE-2017-5390 concerns the JSON viewer in Mozilla/Thunderbird Developer Tools that uses insecure methods to copy/view JSON or HTTP header data, enabling potential privilege escalation. Concrete details in connected docs show this affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox

CVE-2019-11694

CVE-2019-11694 is a Windows-only vulnerability in the Mozilla Firefox/Thunderbird stack where an uninitialized memory value can leak from a broker into a renderer when accessing an otherwise unavailable file in the Windows sandbox. Affected products include Thunderbird < 60.7, Firefox < 67,...

CVE-2021-29951

CVE-2021-29951 involves the Mozilla Maintenance Service granting SERVICE_START access to BUILTIN|Users, enabling domain users to start/stop the browser update service. Affected: Windows systems older than Windows 10 build 1709; Firefox prior to 87 and Firefox ESR prior to 78.10.1, Thunderbird pri...

CVE-2023-5724

The connected Astra Linux bulletin confirms CVE-2023-5724: Drivers are not always robust to extremely large draw calls, potentially causing crashes in Firefox before 119, Firefox ESR before 115.4, and Thunderbird before 115.4.1. Affected versions are Firefox <119, Firefox ESR <115.4, Thunde...

CVE-2019-11723

CVE-2019-11723 affects Mozilla Firefox prior to version 68, where during add-on installation the initial fetch ignored origin attributes of the browsing context, potentially leaking cookies in private browsing or across Firefox Multi-Account Containers. The issue is documented in multiple sources...

CVE-2023-5170

In Firefox, CVE-2023-5170 covers a memory leak in the canvas rendering path where a compromised content process could cause a surface to change unexpectedly, leaking privileged-process memory and potentially enabling a sandbox escape. Affected software: Mozilla Firefox versions prior to 118. Root...

CVE-2026-10702

Mozilla Firefox is affected by a JIT miscompilation vulnerability in the JavaScript Engine: JIT component . The root cause is attributed to type mixing errors during JIT compilation, which can be exploited by a remote attacker to achieve arbitrary code execution . The vulnerability was addressed ...

CVE-2019-11738

CVE-2019-11738 describes a Content Security Policy bypass in Firefox before 69 and Firefox ESR before 68.1: a hash-based CSP source that takes the empty string as input can allow execution of javascript: URIs, bypassing CSP permissions. Affected products: Firefox <69 and Firefox ESR

CVE-2019-11750

CVE-2019-11750 : A type confusion in Spidermonkey causes a non-exploitable crash in Firefox versions before 69 and Firefox ESR before 68.1. Affected products include Firefox <69 / ESR

CVE-2020-12423

CVE-2020-12423 (Windows only) is a DLL hijacking vulnerability in Firefox: if webauthn.dll is missing and a malicious DLL with the same name is placed in a folder on the user’s PATH, Firefox may load it and execute arbitrary code. Affected products are Firefox versions earlier than 78 on Windows....

CVE-2026-15718

The Mozilla Firefox web browser and Mozilla Thunderbird mail client are affected by CVE-2026-15718 , which involves an invalid pointer in the JavaScript: WebAssembly component. Exploiting this vulnerability can allow a remote attacker to disclose sensitive information . The flaw has been addresse...

CVE-2021-29990

CVE-2021-29990 corresponds to memory-safety bugs in Mozilla Firefox 90 that Mozilla notes could be exploited to run arbitrary code. The affected family is Firefox before 91; the risk is tied to memory corruption in Firefox components, with a plausible remote-code-execution impact as indicated in ...

CVE-2017-5375

CVE-2017-5375 affects Mozilla Thunderbird, Firefox ESR, and Firefox prior to certain version thresholds. The issue is a JIT code allocation vulnerability that can bypass ASLR and DEP, enabling memory corruption. Public exploit activity exists (ASM.JS JIT-Spray PoCs) for multiple Firefox versions ...

CVE-2019-11747

CVE-2019-11747 affects Mozilla Firefox and Firefox ESR. The vulnerability stems from a bug in the History pane’s “Forget about this site” feature which, while intended to delete site-visit data, also removes HSTS settings for sites on the pre-load list. As a result, on the next visit, if a user u...

CVE-2020-6815

CVE-2020-6815: Firefox before 74 contains memory safety and script safety bugs in the browser engine (affecting Firefox 73). Mozilla states these could be exploited to run arbitrary code, implying high-severity remote code execution if leveraged. Remediation noted in public advisories is to upgra...

CVE-2025-1930

A use-after-free vulnerability exists in the AudioIPC component of Mozilla Firefox , Firefox ESR , and Thunderbird . On Windows , a compromised content process can send malformed StreamData over AudioIPC to trigger this flaw in the Browser process , potentially leading to a sandbox escape . This ...

CVE-2018-12376

CVE-2018-12376 involves memory safety bugs in Firefox 61/ESR 60.1 and Thunderbird

CVE-2019-9794

CVE-2019-9794: Command line arguments are not discarded when Firefox is invoked as a shell handler for URLs on Windows, enabling potential remote file retrieval/execution. Affected: Thunderbird <60.6, Firefox ESR <60.6, Firefox

CVE-2019-9821

CVE-2019-9821 : A use-after-free in AssertWorkerThread caused by a race with shared workers affects Mozilla Firefox versions before 67. The issue can lead to a potentially exploitable crash (no exploitation details provided in the documents). Affected product: Mozilla Firefox; vulnerable componen...

CVE-2023-5725

CVE-2023-5725 is a documented vulnerability affecting Firefox (before 119), Firefox ESR (before 115.4), and Thunderbird (before 115.4.1). A malicious installed WebExtension could open arbitrary URLs, which under certain conditions could enable collection of sensitive user data. The connected docu...

CVE-2019-11753

CVE-2019-11753 affects Firefox on Windows where the installer can place Firefox in a user-writable location. The underlying issue is lack of integrity checks in the Mozilla Maintenance Service during updates, allowing a locally replaced executable in the unprotected path to run with elevated priv...