kerberos

Managing PAC Validation Changes for CVE-2024-26248 & CVE-2024-29056: A Deep Dive In today’s fast-paced security landscape, staying ahead of vulnerabilities is key. Microsoft’s recent 30-day notice highlights important changes in the way Windows handles Kerberos PAC (Privilege Attribute...

Microsoft’s security roadmap continues to evolve, and one of the latest changes targets an aging encryption method. In an announcement dated February 28, 2025, Microsoft outlined plans to remove the Data Encryption Standard (DES) from Kerberos in Windows Server 2025 and Windows 11, version 24H2...

The world of enterprise authentication is full of complexities, and one such challenge lies in configuring Kerberos realm-to-host mappings. Microsoft’s recent support article on the subject—published on February 20, 2025—sheds light on some string-length limitations that can impact...

Microsoft has announced a significant change on the cybersecurity front: by April 2025, the company will disable legacy Kerberos PAC validation protocols for Windows 10, Windows 11, and Windows Server. This move is a part of Microsoft's continuous evolution toward more modern, secure...

In a recent update from Microsoft's Security Response Center (MSRC), a new vulnerability—CVE-2025-21350—has emerged, specifically targeting Windows Kerberos authentication. Though details remain sparse with a “Information published” note on the official MSRC update guide, early indications...

Attention Windows enthusiasts and IT admins: Microsoft has just refreshed its playbook for hardening the most vulnerable corners of its operating systems. Yes, we're talking about the nitty-gritty of keeping your Windows environment safe from increasingly devious cyberthreats. If you're...

The spotlight is once again on Microsoft’s ecosystem as cybersecurity professionals and Windows users gear up to address a newly identified vulnerability – CVE-2025-21218. This vulnerability, categorized as a Denial of Service (DoS) exploit, specifically targets the Windows Kerberos...

Hold onto your hats, Windows enthusiasts, because a newly disclosed vulnerability might just have you looking twice at your authentication systems. Microsoft has released crucial information detailing a Zero-Day vulnerability in Kerberos authentication protocols dubbed CVE-2025-21299. This isn’t...

For Windows admins and cybersecurity enthusiasts, there’s a new name to pin on your wall of vulnerabilities—the recently disclosed CVE-2025-21242, an Information Disclosure vulnerability in the highly pivotal Windows Kerberos authentication system. This vulnerability is currently marked as an...

Microsoft has rolled out a crucial set of changes in its Privilege Attribute Certificate (PAC) Validation protocol, addressing two significant security vulnerabilities: CVE-2024-26248 and CVE-2024-29056. These updates, released via Windows security patches on April 9, 2024, and scaling...

In a move that secures systems while turning a significant page in authentication history, Microsoft has made decisive strides in phasing out the old and increasingly vulnerable NTLM (Net-NTLM or Windows NT LAN Manager) protocol. While many users likely missed this change amidst the flood of...

In a significant shift for security and authentication practices, Microsoft has commenced the removal of NTLM (New Technology LAN Manager) from its latest operating systems, specifically Windows 11 version 24H2 and Server 2025. This decision reflects the company's ongoing commitment to enhance...

In a bold move to fortify Windows environments, Microsoft has officially ramped up its defenses against NTLM relay attacks, a method that exploits the weaknesses of the long-reigning NTLM (NT LAN Manager) authentication protocol. As we venture into a new era for Windows security, it’s essential...

Introduction In the ever-evolving landscape of cybersecurity, vulnerabilities such as CVE-2024-43639 emerge as significant threats to Windows users. This particular flaw, identified as a Remote Code Execution (RCE) vulnerability within the Kerberos authentication protocol, raises urgent alarms...

CVE-2024-38129: A Closer Look at the Windows Kerberos Elevation of Privilege Vulnerability Overview of the Vulnerability CVE-2024-38129 has been flagged as an elevation of privilege vulnerability in Windows' Kerberos authentication protocol. As a widely used authentication method in various...

In a recent announcement from Microsoft, detailed in the update KB5014754, significant changes concerning certificate-based authentication for Windows domain controllers were presented. This update affects several versions of Windows Server, including 2012 R2, 2016, and 2019, extending the scope...

CVE-2024-29995: Windows Kerberos Elevation of Privilege Vulnerability Overview In August 2024, Microsoft disclosed a significant vulnerability identified as CVE-2024-29995, which pertains to the Kerberos authentication protocol used in Windows operating systems. This vulnerability allows...

In the realm of Windows security, the continuous battle against vulnerabilities remains ever-present. Recently, steps have been released to mitigate vulnerabilities in Kerberos Signature Validation through the unveiling of KB5037754. This article delves into the essential information surrounding...

Hello, we are facing an issue where the domain admin accounts are becoming locked randomly. We have filtered out the event 4740 in the windows security log and we can see the PCs triggering this lockdown. ------------------------------------- A user account was locked out. Subject: Security ID...

Hello Windows Insiders, today we’re releasing Windows 11 Build 22000.588 (KB5011563) to Windows Insiders in the Beta and Release Preview Channels. This update includes the following improvements: New! We displayed up to three high priority toast notifications simultaneously. This feature is for...