CrackArmor: Nine AppArmor Flaws Let Local Users Escalate to Root — What Organizations Need to Know

CrackArmor: Nine AppArmor Flaws Let Local Users Escalate to Root — What Organizations Need to Know

AppArmor, a widely deployed Linux Mandatory Access Control (MAC) framework, is at the center of a set of serious vulnerabilities that researchers have dubbed “CrackArmor.” Disclosed on March 12, 2026 by the Qualys Threat Research Unit (TRU), the collection of flaws affects AppArmor’s implementation as a Linux Security Module (LSM) and has been present in the upstream kernel since around

Microsoft Active Directory Domain Services Vulnerability (CVE-2026-25177) — What Administrators Need to Know

Microsoft Active Directory Domain Services Vulnerability (CVE-2026-25177) — What Administrators Need to Know

In early March 2026, Microsoft released an important security update addressing a high-severity vulnerability in Active Directory Domain Services (AD DS) tracked as CVE-2026-25177. The flaw received a CVSS score of 8.8 and can allow an authenticated network actor with limited permissions to escalate privileges to full SYSTEM on a targeted domain controller. Microsoft and third-party researchers coordinated fixes and

Zombie ZIP: How Malformed Archives Can Hide Malware from Security Scanners

Zombie ZIP: How Malformed Archives Can Hide Malware from Security Scanners

A new archive-manipulation technique called “Zombie ZIP” lets attackers conceal payloads inside ZIP files in a way that can evade many antivirus and endpoint detection solutions. The method was described by security researcher Chris Aziz of Bombadil Systems and has drawn warnings from CERT/CC and the wider security community. This post explains how Zombie ZIP works, what research and evidence

Microsoft .NET Out-of-Bounds Read (CVE-2026-26127) Causes Remote Denial-of-Service Risk

Microsoft .NET Out-of-Bounds Read (CVE-2026-26127) Causes Remote Denial-of-Service Risk

Microsoft has issued an emergency security update to address a newly disclosed vulnerability in the .NET ecosystem that can be triggered remotely and results in denial-of-service (DoS) conditions. The flaw, tracked as CVE-2026-26127, affects multiple .NET runtime and package versions across Windows, macOS, and Linux. Administrators and developers should prioritize applying the available patches to prevent service disruption. What the

Zero-Day on the Market: $220K Exploit Targets Windows Remote Desktop Services (CVE-2026-21533)

Zero-Day on the Market: $220K Exploit Targets Windows Remote Desktop Services (CVE-2026-21533)

Remote Desktop Services (RDS) has come under renewed scrutiny after reports that a working exploit for CVE-2026-21533 — an elevation-of-privilege vulnerability in Windows Remote Desktop Services — was listed for sale on a dark web forum for $220,000. The listing and surrounding reporting are factual and straightforward: a recently created account advertised a claimed zero-day exploit, observers recorded the posting,

Clipboard Trap: ClickFix Now Abuses Windows Terminal to Deliver Lumma Stealer

Clipboard Trap: ClickFix Now Abuses Windows Terminal to Deliver Lumma Stealer

A newly observed wave of ClickFix social-engineering attacks has shifted tactics, hijacking Windows Terminal as its execution environment to deliver credential-stealing malware. Security researchers from Microsoft and other vendors tracked this campaign in early 2026 and reported a reliable pattern: victims are manipulated into pasting an obfuscated command from their clipboard into a legitimate-looking terminal window, which then decodes and