An attacker could have leveraged the Windows Error Reporter to run arbitrary code on the system escaping the sandbox. *Note:* This issue only affected Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

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firefox: thunderbird: Memory safety bugs

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Memory safety bugs are present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140, and Thunderbird 140. Some...

firefox: thunderbird: Memory safety bugs fixed in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. Some of these bugs showed evidence of memory corruption, and we presume that with enough...

Mozilla Firefox ESR < 115.23

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.23. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-30 advisory. - A process isolation vulnerability in Firefox stemmed from improper handling of javascript: URIs, which...

Mozilla Firefox ESR < 128.10

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 128.10. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-29 advisory. - Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memo...

Mozilla Firefox ESR < 128.10

The version of Firefox ESR installed on the remote Windows host is prior to 128.10. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-29 advisory. - Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory...

Mozilla Firefox ESR < 128.8.1

The version of Firefox ESR installed on the remote Windows host is prior to 128.8.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2025-19 advisory. - Following the recent Chrome sandbox escape CVE-2025-2783, various Firefox developers identified a similar pattern in our...

CVE-2025-1935 Clickjacking the registerProtocolHandler info-bar

A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8...

Mozilla Firefox ESR < 115.21

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.21. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-15 advisory. - Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and...

firefox: thunderbird: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effo...

UBUNTU-CVE-2025-1012

A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135...

Mozilla Firefox ESR SEoL (17.x)

According to its version, Mozilla Firefox ESR version install on the remote host has reached end of support. It is, therefore, no longer maintained by its vendor or provider. Lack of support implies that no new security patches for the product will be released by the vendor. As a result, it may...

DEBIAN-CVE-2024-11692

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...

Mozilla Firefox ESR < 128.5

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 128.5. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2024-64 advisory. - Memory safety bugs present in Firefox 132, Firefox ESR 128.4, and Thunderbird 128.4. Some of these bugs...

DEBIAN-CVE-2024-4367

A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. This vulnerability affects Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11...

Mozilla: Memory safety bugs fixed in Firefox 124, Firefox ESR 115.9, and Thunderbird 115.9

The Mozilla Foundation Security Advisory describes this flaw as: Memory safety bugs present in Firefox 123, Firefox ESR 115.8, and Thunderbird 115.8. 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...

Mozilla: Memory safety bugs fixed in Firefox 123, Firefox ESR 115.8, and Thunderbird 115.8

The Mozilla Foundation Security Advisory describes this flaw as: Memory safety bugs present in Firefox 122, Firefox ESR 115.7, and Thunderbird 115.7. 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...

Mozilla: Memory safety bugs fixed in Firefox 123, Firefox ESR 115.8, and Thunderbird 115.8

The Mozilla Foundation Security Advisory describes this flaw as: Memory safety bugs present in Firefox 122, Firefox ESR 115.7, and Thunderbird 115.7. 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...

CVE-2024-0743

An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. This vulnerability affects Firefox 122, Firefox ESR 115.9, and Thunderbird 115.9...

Mozilla Firefox ESR < 115.6

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.6. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-54 advisory. - Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. Some of these bugs...