Astra Linux – Vulnerability in Firefox and Thunderbird

Memory safety bugs exist in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143, and Thunderbird 143. Some of these bugs exhibited signs of memory corruption, and we assume that with sufficient effort, some of these bugs could have been exploited to execute arbitrary code...

thunderbird: firefox: An OBJECT tag type attribute overrode browser behavior on web resources without a content-type

A flaw was found in Thunderbird and Firefox. The Mozilla Foundation's Security Advisory describes the following issue: A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when encountering a web resource served without a content-type. This...

thunderbird: firefox: Use-after-free in MediaTrackGraphImpl::GetInstance()

A flaw was found in Thunderbird and Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in MediaTrackGraphImpl::GetInstance...

SUSE CVE-2025-11721

Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 144 and Thunderbird 144...

thunderbird: firefox: Use-after-free in MediaTrackGraphImpl::GetInstance()

A flaw was found in Thunderbird and Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in MediaTrackGraphImpl::GetInstance...

CVE-2025-11720

The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was loaded, not the full hostname. User supplied content hosted on a subdomain of a site could have been used to fool a user into thinking it was content from a different subdomain of that site. This...

CVE-2025-11713

Insufficient escaping in the “Copy as cURL” feature could have been used to trick a user into executing unexpected code on Windows. This did not affect the application when running on other operating systems. This vulnerability affects Firefox 144, Firefox ESR 140.4, Thunderbird 144, and...

PT-2025-41909

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 144 Thunderbird versions prior to 144 Description A memory safety issue exists in Firefox and Thunderbird. Evidence suggests the bug could lead to memory corruption, potentially allowing for arbitrary code execution...