CVE-2025-5986

A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without prompting, even if auto-saving is disabled. This behavior can be abused to fill the disk with garbage data e.g. using /dev/urandom on Linux or to...

CVE-2025-5986 Unsolicited File Download, Disk Space Exhaustion, and Credential Leakage via mailbox:/// Links

A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without prompting, even if auto-saving is disabled. This behavior can be abused to fill the disk with garbage data e.g. using /dev/urandom on Linux or to...

Security Vulnerabilities fixed in Thunderbird 139.0.2 — Mozilla

A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without prompting, even if auto-saving is disabled. This behavior can be abused to fill the disk with garbage data e.g. using /dev/urandom on Linux or to...

Mozilla Thunderbird < 139.0.2

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 139.0.2. It is, therefore, affected by a vulnerability as referenced in the mfsa2025-50 advisory. - A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the...

Security Vulnerabilities fixed in Thunderbird 128.11.1 — Mozilla

A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without prompting, even if auto-saving is disabled. This behavior can be abused to fill the disk with garbage data e.g. using /dev/urandom on Linux or to...

PT-2025-25209

Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 128.11.1 Thunderbird versions prior to 139.0.2 Description A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without...

Mozilla Thunderbird < 128.11.1

The version of Thunderbird installed on the remote Windows host is prior to 128.11.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2025-49 advisory. - A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's...

Mozilla Thunderbird < 128.11.1

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 128.11.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2025-49 advisory. - A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the...

Mozilla Thunderbird < 139.0.2

The version of Thunderbird installed on the remote Windows host is prior to 139.0.2. It is, therefore, affected by a vulnerability as referenced in the mfsa2025-50 advisory. - A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's...

Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: thunderbird: JavaScript Execution via Spoofed PDF Attachment and file:/// Link CVE-2025-3909 thunderbird: Sender Spoofing via Malformed From Header in Thunderbird CVE-2025-3875 thunderbird: Unsolicited File Download,...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service. Red Hat Product Security has rated this update ...

RHEL 8 : thunderbird (RHSA-2025:8594)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:8594 advisory. Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: thunderbird: JavaScript Execution via Spoofed PDF Attachment...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.4 Telecommunications Update Service. Red Hat Product Security has rated this update ...

RHEL 8 : thunderbird (RHSA-2025:8507)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:8507 advisory. Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: thunderbird: JavaScript Execution via Spoofed PDF Attachment...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

RHEL 8 : thunderbird (RHSA-2025:8391)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:8391 advisory. Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: thunderbird: JavaScript Execution via Spoofed PDF Attachment...

RHEL 9 : thunderbird (RHSA-2025:8324)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:8324 advisory. Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: thunderbird: JavaScript Execution via Spoofed PDF Attachment...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...