A big finish to 2025 in December’s Patch Tuesday

A recently disclosed maximum-severity security flaw impacting the Wing FTP Server has come under active exploitation in the wild, according to Huntress. The vulnerability, tracked as CVE-2025-47812 (CVSS score: 10.0), is a case of improper handling of null (”) bytes in the server’s web interface, which allows for remote code execution. It has been addressed…

Cybersecurity researchers have shed light on a novel attack chain that employs phishing emails to deliver an open-source backdoor called VShell. The “Linux-specific malware infection chain that starts with a spam email with a malicious RAR archive file,” Trellix researcher Sagar Bade said in a technical write-up. “The payload isn’t hidden inside the file content…

In yet another instance of threat actors repurposing legitimate tools for malicious purposes, it has been discovered that hackers are exploiting a popular red teaming tool called Shellter to distribute stealer malware. The company behind the software said a company that had recently purchased Shellter Elite licenses leaked their copy, prompting malicious actors to weaponize…

In yet another instance of threat actors quickly jumping on the exploitation bandwagon, a newly disclosed critical security flaw in BerriAI’s LiteLLM Python package has come under active exploitation in the wild within 36 hours of the bug becoming public knowledge. The vulnerability, tracked as CVE-2026-42208 (CVSS score: 9.3), is an SQL injection that could…

The financially motivated threat actor known as FIN7 has been linked to a Python-based backdoor called Anubis (not to be confused with an Android banking trojan of the same name) that can grant them remote access to compromised Windows systems. “This malware allows attackers to execute remote shell commands and other system operations, giving them…