RLSA-2025:8196 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,...

thunderbird: JavaScript Execution via Spoofed PDF Attachment and file:/// Link

The Mozilla Foundation's Security Advisory describes the following issue: Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By crafting a nested email attachment message/rfc822 and setting its content type to...

Malware Attack Targets Windows Users with Spoofed Energoatom Document

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary The malware comes in the form of a spoofed document from Energoatom and is believed to be part of a larger campaign against Ukraines energy sector, which has been under constant cyberattacks since the...