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-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-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-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-2019-11694

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-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-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-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-2023-5725

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-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-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-2018-5158

CVE-2018-5158: Firefox PDF viewer has insufficient sanitization of PostScript calculator functions, enabling injection of malicious JavaScript via crafted PDFs. Impact affects Firefox ESR < 52.8 and Firefox

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-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-2018-12376

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

CVE-2022-34475

Mozilla Firefox vulnerability CVE-2022-34475 involves SVG tags referencing a same-origin document that could lead to script execution if attacker input is sanitized via the HTML Sanitizer API. Affected product: Firefox prior to version 102. Root cause: improper handling of in combination with s...

CVE-2026-15719

A site isolation issue exists in the DOM: Navigation component of the Mozilla Firefox web browser and Thunderbird mail client. The root cause involves deficiencies in access control within the navigation mechanism, which could allow an attacker to compromise the confidentiality and integrity of p...

CVE-2012-4930

The CVE-2012-4930 issue affects the SPDY protocol (v3 and earlier) as used by Firefox, Chrome, and other products. It allows a man-in-the-middle to observe length-based side channels of TLS-compressed data to potentially recover plaintext HTTP headers (CRIME attack). Root cause: TLS compression w...

CVE-2021-29987

CVE-2021-29987 describes a UI permission trick where after requesting multiple permissions and closing the first panel, subsequent panels appear in a different position but still register a click in the default location, potentially causing a user to grant unwanted permissions. Technical details ...

CVE-2023-5175

The CVE-2023-5175 issue affects Mozilla Firefox pre-118 releases. The vulnerability stems from an ImageBitmap being created during process shutdown that could later be used after being freed via a different codepath, resulting in a potentially exploitable crash (use-after-free/memory safety conce...

CVE-2018-12390

CVE-2018-12390 corresponds to memory-safety bugs in Mozilla Firefox and Thunderbird prior to patched versions. Affected: Firefox < 63, Firefox ESR < 60.3, Thunderbird

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-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-2018-12365

CVE-2018-12365 is a vulnerability where a compromised IPC child process can escape the content sandbox and list names of arbitrary files on the file system without user consent. It affects Thunderbird (versions below 60, including 52.9) and Firefox-based products (Firefox ESR < 60.1/52.9, Fire...

CVE-2023-4576

CVE-2023-4576 affects Mozilla Firefox on Windows, where an integer overflow in RecordedSourceSurfaceCreation can cause a heap buffer overflow potentially leaking data and enabling sandbox escape. Affected products/versions listed include Firefox on Windows and Firefox/Thunderbird releases older t...

CVE-2023-5731

CVE-2023-5731 covers memory safety bugs in Firefox 118 that may allow arbitrary code execution; affected product branch is Firefox versions before 119. Connected sources confirm these memory corruption-style issues and indicate exploitation would require sufficient effort, with no public exploit ...

CVE-2022-46882

CVE-2022-46882 is a use-after-free in WebGL extensions that could cause a crash in affected Mozilla products. Affected software include Firefox versions before 107 and Firefox ESR before 102.6, and Thunderbird before 102.6. The connected documents identify the underlying issue as a use-after-free...

CVE-2018-12363

CVE-2018-12363 is a use-after-free vulnerability in Firefox/Thunderbird caused by mutation events moving DOM nodes between documents. The old document may be freed while a stale pointer remains, potentially enabling a crash. Public references show affected products include Thunderbird versions ol...

CVE-2018-5188

CVE-2018-5188 involves memory safety bugs in Firefox 60/ESR 60 and Thunderbird

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...

CVE-2020-6824

CVE-2020-6824 affects Firefox before version 75. The issue is a privacy/credential handling bug where passwords generated in a private browsing window could be reused in a subsequent private window for the same site, yielding identical passwords instead of independent ones. Root cause: state reta...

CVE-2022-3266

CVE-2022-3266 is an out-of-bounds read in H.264 video decoding that can trigger a crash. Affected products in the provided documents include Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox

CVE-2018-12362

CVE-2018-12362 is an integer overflow in the SSSE3 scaler used during graphics operations, affecting Thunderbird and Firefox variants prior to specific versions (e.g., Thunderbird < 52.9, Firefox ESR < 60.1, Firefox

CVE-2018-5150

CVE-2018-5150 concerns memory safety bugs in Firefox 59/ESR 52.7 and Thunderbird 52.7, with potential memory corruption that could allow arbitrary code execution. Affected products include Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR

CVE-2021-29982

CVE-2021-29982 affects Firefox and Thunderbird prior to version 91. Root cause: incorrect JIT optimization causing type confusion, leading to potential leakage of a single memory bit. Connected advisories confirm the issue and describe remediation as upgrading to Firefox/Thunderbird version 91 or...

CVE-2018-5089

CVE-2018-5089 is a memory-safety vulnerability affecting Mozilla products: Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox

CVE-2022-40962

CVE-2022-40962 is a memory safety issue in Firefox 104 and Firefox ESR 102.2 reported by Mozilla Fuzzing Team. The connected documents confirm memory corruption indicators and state that, with enough effort, some bugs could be exploited to run arbitrary code. The vulnerability affects Firefox ESR...

CVE-2025-49710

Mozilla Firefox versions prior to 139.0.4 are vulnerable to an integer overflow in the OrderedHashTable component used by the JavaScript engine . This input validation error could allow a remote attacker to execute arbitrary code . The vulnerability was addressed in Firefox version 139.0.4 .

CVE-2018-12364

The CVE-2018-12364 entry affects Thunderbird and was mitigated in various distributions through Thunderbird 52.9.1 and related security advisories. The connected documents confirm concrete details: NPAPI plugins (e.g., Flash) can bypass CORS by issuing a same-origin POST that redirects (307) to t...

CVE-2019-11748

CVE-2019-11748 affects Firefox WebRTC permissions: persisted access to microphone/camera could be exploited when in a third‑party context. Root cause: permissions were kept across navigations, enabling invisibly embedded resources to reuse user consent. Impact: user prompts are now required per u...

CVE-2022-34472

CVE-2022-34472 : If a PAC URL is configured and the PAC host is unreachable, OCSP requests are blocked, leading to incorrect error pages being shown. Affected: Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, Thunderbird

CVE-2025-5020

A security vulnerability in Mozilla Firefox for iOS (prior to version 139 ) allows attackers to spoof website addresses . This occurs when the browser processes maliciously-crafted URLs opened from other applications, such as Safari, that utilize non-HTTP schemes used internally by the Firefox iO...

CVE-2023-29541

The CVE-2023-29541 issue concerns Firefox on Linux (and Thunderbird) where downloads of files ending with .desktop could be interpreted as commands, enabling attacker-controlled execution. Public advisories show affected products as Firefox (Linux) older than 112, Thunderbird older than 102.10, a...

CVE-2023-4052

CVE-2023-4052 affects Firefox on Windows and Thunderbird < 115.1. The root cause is a Firefox updater directory that is writable by non-privileged users; during uninstall, files in that directory can be recursively deleted with the uninstall user’s permissions. This could enable arbitrary file...

CVE-2023-5173

CVE-2023-5173 affects Firefox in non-standard configurations where the non-HTTPS Alternate Services preference is enabled (network.http.altsvc.oe). The issue is an integer overflow that can cause an out-of-bounds write into privileged process memory, with impact described as high and specific to ...

CVE-2018-12359

CVE-2018-12359 is a buffer overflow in rendering canvas content when dynamically adjusting the height/width, potentially causing a crash. Affected: Thunderbird and Firefox variants (e.g., Thunderbird < 52.9, Firefox ESR < 60.1, Firefox

CVE-2020-6823

The CVE-2020-6823 entry concerns Mozilla Firefox (affected versions: below 75). A malicious extension could call browser.identity.launchWebAuthFlow, allowing control of the redirect_uri and through the returned Promise obtain an OAuth authorization code, enabling the attacker to access the user’s...

CVE-2021-38492

CVE-2021-38492 affects Mozilla Firefox on Windows, where delegating navigations to the OS could accept mk: URLs and load Internet Explorer in unprivileged mode. The vulnerability impacts Firefox versions older than 92 (and related Thunderbird/ ESR lines). Remediation is to upgrade to Firefox 92+ ...