Hotpatch Alert: Microsoft Fixes Critical RRAS Remote-Execution Flaws in Windows 11

Hotpatch Alert: Microsoft Fixes Critical RRAS Remote-Execution Flaws in Windows 11

Microsoft issued an out-of-band hotpatch on March 13, 2026, to address a set of serious vulnerabilities in the Windows Routing and Remote Access Service (RRAS) management tool that affect Windows 11. The update, tracked as KB5084597 and aimed at OS builds 26200.7982 (25H2) and 26100.7982 (24H2), patches three CVEs that can allow a remote attacker to disrupt RRAS or execute

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,