Showing 25 vulnerabilities on this page for Firefox ESR

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Memory safety bugs present in Firefox 132, Firefox ESR 128.4, and Thunderbird 128.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

CWE-94Nov 26, 2024
CVSS8.8v3.1EPSS0.686%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

A flaw in handling fullscreen transitions may have inadvertently caused the application to become stuck in fullscreen mode when a modal dialog was opened during the transition. This issue left users unable to exit fullscreen mode using standard actions like pressing "Esc" or accessing right-click menus, resulting in a disrupted browsing experience until the browser is restarted. *This bug only affects the application when running on macOS. Other operating systems are unaffected.* This vulnerab

Nov 26, 2024
CVSS9.8v3.1EPSS0.693%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path. Under specific conditions, the same symmetric key could have been freed twice, potentially leading to memory corruption. This vulnerability affects Firefox < 133, Thunderbird < 133, Firefox ESR < 128.7, and Thunderbird < 128.7.

CWE-415Nov 26, 2024
CVSS9.8v3.1EPSS0.919%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

When handling keypress events, an attacker may have been able to trick a user into bypassing the "Open Executable File?" confirmation dialog. This could have led to malicious code execution. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

CWE-94Nov 26, 2024
CVSS8.8v3.1EPSS0.768%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

The application failed to account for exceptions thrown by the `loadManifestFromFile` method during add-on signature verification. This flaw, triggered by an invalid or unsupported extension manifest, could have caused runtime errors that disrupted the signature validation process. As a result, the enforcement of signature validation for unrelated add-ons may have been bypassed. Signature validation in this context is used to ensure that third-party applications on the user's computer have not

CWE-347Nov 26, 2024
CVSS5.4v3.1EPSS0.35%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

A crafted URL containing Arabic script and whitespace characters could have hidden the true origin of the page, resulting in a potential spoofing attack. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

CWE-1021Nov 26, 2024
CVSS5.4v3.1EPSS0.444%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Enhanced Tracking Protection's Strict mode may have inadvertently allowed a CSP `frame-src` bypass and DOM-based XSS through the Google SafeFrame shim in the Web Compatibility extension. This issue could have exposed users to malicious frames masquerading as legitimate content. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18.

CWE-79Nov 26, 2024
CVSS6.1v3.1EPSS0.499%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

The executable file warning was not presented when downloading .library-ms files. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

Nov 26, 2024
CVSS9.8v3.1EPSS0.833%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

An attacker could cause a select dropdown to be shown over another tab; this could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

CWE-290Nov 26, 2024
CVSS4.3v3.1EPSS0.473%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Certain WebGL operations on Apple silicon M series devices could have lead to an out-of-bounds write and memory corruption due to a flaw in Apple's GPU driver. *This bug only affected the application on Apple M series hardware. Other platforms were unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18.

CWE-787Nov 26, 2024
CVSS8.8v3.1EPSS0.704%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Memory safety bugs present in Firefox 131, Firefox ESR 128.3, and Thunderbird 128.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

CVSS9.8v3.1EPSS0.591%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

By sending a specially crafted push message, a remote server could have hung the parent process, causing the browser to become unresponsive. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

CWE-400CWE-89Oct 29, 2024
CVSS7.5v3.1EPSS0.803%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

A clipboard "paste" button could persist across tabs which allowed a spoofing attack. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

CWE-290Oct 29, 2024
CVSS7.5v3.1EPSS0.529%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Repeated writes to history interface attributes could have been used to cause a Denial of Service condition in the browser. This was addressed by introducing rate-limiting to this API. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

CWE-125Oct 29, 2024
CVSS7.5v3.1EPSS0.596%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Video frames could have been leaked between origins in some situations. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.

CWE-203Oct 29, 2024
CVSS7.5v3.1EPSS0.687%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Truncation of a long URL could have allowed origin spoofing in a permission prompt. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

CWE-290Oct 29, 2024
CVSS7.5v3.1EPSS0.529%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

In multipart/x-mixed-replace responses, `Content-Disposition: attachment` in the response header was not respected and did not force a download, which could allow XSS attacks. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

CWE-79Oct 29, 2024
CVSS6.1v3.1EPSS0.56%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

The origin of an external protocol handler prompt could have been obscured using a data: URL within an `iframe`. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

CWE-346Oct 29, 2024
CVSS5.4v3.1EPSS0.324%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

An attacker could have caused a use-after-free when accessibility was enabled, leading to a potentially exploitable crash. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.

CWE-416Oct 29, 2024
CVSS7.5v3.1EPSS0.593%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `object` elements. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.

CWE-281Oct 29, 2024
CVSS7.5v3.1EPSS0.598%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Mozilla Firefox Use-After-Free Vulnerability

An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox < 131.0.2, Firefox ESR < 128.3.1, Firefox ESR < 115.16.1, Thunderbird < 131.0.1, Thunderbird < 128.3.1, and Thunderbird < 115.16.0.

CWE-416Oct 9, 2024
CVSS9.8v3.1EPSS23.2%PoCs3SignalsListed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

Memory safety bugs present in Firefox 130, Firefox ESR 128.2, and Thunderbird 128.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

CWE-119Oct 1, 2024
CVSS9.8v3.1EPSS0.61%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Memory safety bugs present in Firefox 130, Firefox ESR 115.15, Firefox ESR 128.2, and Thunderbird 128.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.

CWE-119Oct 1, 2024
CVSS9.8v3.1EPSS0.733%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

A potential memory corruption vulnerability could be triggered if an attacker had the ability to trigger an OOM at a specific moment during JIT compilation. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

CWE-119Oct 1, 2024
CVSS8.8v3.1EPSS0.474%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

A website configured to initiate a specially crafted WebTransport session could crash the Firefox process leading to a denial of service condition. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

CWE-404Oct 1, 2024
CVSS7.5v3.1EPSS0.491%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX