The vulnerability of the WebRender component in Mozilla Firefox, Firefox ESR, and the email client Thunderbird allows a hacker to escalate their privileges.

The vulnerability of the WebRender component in Mozilla Firefox, Firefox ESR, and the email client Thunderbird is related to deficiencies in access control. Exploiting this vulnerability can allow an attacker to enhance their privileges remotely...

CVE-2026-12289

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the Graphics: WebRender component...

SUSE CVE-2026-12289

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

Linux Distros Unpatched Vulnerability : CVE-2026-12289

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152,...

CVE-2026-12289

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

UBUNTU-CVE-2026-12289

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

CVE-2026-12289

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

CVE-2026-12289

CVE-2026-12289 describes a privilege-escalation vulnerability in the Graphics: WebRender component. The public description and connected advisories indicate this affects Mozilla Firefox and Thunderbird products, with fixes shipped in: Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbi...

CVE-2026-12289 Privilege escalation in the Graphics: WebRender component

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

CVE-2026-12289 Privilege escalation in the Graphics: WebRender component

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

EUVD-2026-37080

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

CVE-2026-12289

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

CVE-2026-12289

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12...

Mozilla Thunderbird < 140.12

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 140.12. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-61 advisory. - Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152,...

KLA91100 Multiple vulnerabilities in Mozilla Firefox ESR

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code. Below is a complete list of vulnerabilities: 1. Security vulnerability in the Graphics: WebRender compone...

Mozilla Firefox ESR < 115.37

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.37. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-59 advisory. - Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 1...

KLA91101 Multiple vulnerabilities in Mozilla Firefox

Multiple vulnerabilities were found in Mozilla Firefox. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code, obtain sensitive information, spoof user interface. Below is a complete list of vulnerabilities: 1. Security...

ROS-20260609-73-0018

The vulnerability of the WebRender component in Mozilla Firefox, Firefox ESR, and the email client Thunderbird is related to the use of memory after it is freed. Exploiting this vulnerability could allow an attacker to cause a service failure...

ROS-20260605-73-0048

The vulnerability of the WebRender component in Mozilla Firefox, Firefox ESR, and the email client Thunderbird is related to the use of memory after it is freed. Exploiting this vulnerability could allow an attacker to cause a service failure...

RLSA-2026:19348 Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: firefox: thunderbird: Incorrect boundary conditions in the Libraries component in NSS CVE-2026-6772 firefox: thunderbird: Use-after-free in the JavaScript Engine component CVE-2026-6754 firefox: thunderbird: Spoofing...