CVE-2025-4085 Potential information leakage and privilege escalation in UITour actor

An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138...

CVE-2025-4084 Potential local code execution in "copy as cURL" command

Due to insufficient escaping of the special characters in the "copy as cURL" feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.. Thi...

CVE-2025-4083 Process isolation bypass using "javascript:" URI links in cross-origin frames

A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability was fixed in Firefox 138, Firefox...

CVE-2025-4082

Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges. This bug only affects Thunderbird for macOS. Other versions of Thunderbird are unaffected.. This vulnerability was fixed in...

CVE-2025-2817 Privilege escalation in Thunderbird Updater

Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations...

CVE-2025-2817 Privilege escalation in Thunderbird Updater

Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations...

Mozilla Thunderbird < 138.0

The version of Thunderbird installed on the remote Windows host is prior to 138.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-31 advisory. - Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. Some of thes...

Mozilla -- control access bypass

[email protected] reports: Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowin...

PT-2025-18152

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 138 Firefox ESR versions prior to 128.10 Firefox ESR versions prior to 115.23 Thunderbird versions prior to 138 Thunderbird ESR versions prior to 128.10 Description A process isolation issue stems from improper handli...

PT-2025-18159

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 138 Thunderbird versions prior to 138 Description A vulnerability existed in Firefox for Android where potentially sensitive library locations were logged via Logcat. Recommendations For Firefox versions prior to 138,...

PT-2025-18158

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 138 Thunderbird versions prior to 138 Description The issue arises from insufficient escaping of special characters in the "copy as cURL" feature. This could allow an attacker to trick a user into executing a command,...

Mozilla -- XPath parsing undefined behavior

[email protected] reports: A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption...

CVE-2025-3522

Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validate...

CVE-2025-3523

When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from...

CVE-2025-2830

By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the...

SUSE CVE-2025-2830

By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the...

SUSE CVE-2025-3523

When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from...

CVE-2025-3522

Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validate...

CVE-2025-3522

Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validate...

CVE-2025-3523

When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from...