Tag: ntlm
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When Trusted Authentication Enables Privilege Escalation
Active Directory remains the backbone of enterprise identity. Despite years of modernization efforts, many organizations still rely on legacy authentication protocols that were never designed for today’s threat landscape. New reporting from Dark Reading highlights how attackers continue to abuse NTLM and Kerberos within Microsoft Active Directory environments to escalate privileges, move laterally, and maintain…
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Microsoft Urges Users to Finally Ditch NTLM Authentication
Seeking to Add Urgency, Mandiant Publishes Rainbow Tables for NTLM Key Hashes. For nearly 30 years, security experts have warned organizations to ditch the weak NTLM authentication protocol in Windows. But its use persists, even amidst easy and active exploits. Now Google has published rainbow tables for NTLMv1. Will this finally drive holdout organizations to…
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Microsoft Takes Major Security Step by Disabling NTLM Authentication by Default
Microsoft is making a significant move to strengthen Windows security by phasing out NTLM (New Technology LAN Manager). This legacy authentication protocol has been part of Windows for over 30 years. The company plans to disable NTLM by default in upcoming Windows releases, replacing it with more secure Kerberos-based alternatives. NTLM is an old authentication…
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Microsoft Begins NTLM Phase-Out With Three-Stage Plan to Move Windows to Kerberos
Microsoft has announced a three-phase approach to phase out New Technology LAN Manager (NTLM) as part of its efforts to shift Windows environments toward stronger, Kerberos-based options.The development comes more than two years after the tech giant revealed its plans to deprecate the legacy technology, citing its susceptibility to weaknesses that could facilitate relay attacks…
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Microsoft sets a path to switch off NTLM across Windows
Windows is shifting to a more secure authentication approach, moving away from New Technology LAN Manager (NTLM) and toward stronger, Kerberos-based options. NTLM has been … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/02/02/microsoft-windows-ntlm-disabling/
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Microsoft to disable NTLM by default in future Windows releases
Microsoft announced that it will disable the 30-year-old NTLM authentication protocol by default in upcoming Windows releases due to security vulnerabilities that expose organizations to cyberattacks. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/microsoft-to-disable-ntlm-by-default-in-future-windows-releases/
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Mandiant pushes organizations to dump insecure NTLMv1 by releasing a way to crack it
Tags: attack, authentication, computer, credentials, crypto, cve, data, data-breach, email, encryption, group, Hardware, international, mandiant, microsoft, network, ntlm, phishing, risk, service, supply-chain, theft, threat, vulnerability, windowspass-the-hash. The benefit is time and money saved: Mandiant reckons its rainbow table allows the recovery of an NTLMv1 key in 12 hours using a computer costing $600, rather than relying on third party services or expensive hardware to brute-force the keys.None of this makes NTLMv1 less secure or easier to target than it already…
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Windows SMB Client Vulnerability Exposes Organizations to Full Active Directory Compromise
A severe vulnerability in Windows Server Message Block (SMB) client authentication hasemergedas a critical threat to Active Directory environments. CVE-2025-33073, a logical flaw in NTLM reflection handling, enables authenticated attackers to escalate to SYSTEM-level privileges and compromise domain controllers, potentially allowing them to take over entire Active Directory forests. Field Value CVE ID CVE-2025-33073 Vulnerability…
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âš¡ Weekly Recap: Fortinet Exploits, RedLine Clipjack, NTLM Crack, Copilot Attack & More
In cybersecurity, the line between a normal update and a serious incident keeps getting thinner. Systems that once felt reliable are now under pressure from constant change. New AI tools, connected devices, and automated systems quietly create more ways in, often faster than security teams can react. This week’s stories show how easily a small…
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New Kerberos Relay Technique Exploits DNS CNAMEs to Bypass Existing Defenses
Tags: attack, authentication, credentials, cve, cyber, defense, dns, exploit, flaw, ntlm, service, threat, vulnerability, windowsA critical vulnerability in Windows Kerberos authentication that enables attackers to conduct credential-relay attacks by exploiting DNS CNAME records. Tracked as CVE-2026-20929, this flaw allows threat actors to force victims into requesting Kerberos service tickets for attacker-controlled systems, facilitating lateral movement and privilege escalation even when NTLM authentication is entirely disabled. CVE ID Vulnerability Name…
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Hidden .NET HTTP proxy behavior can open RCE flaws in apps, a security issue Microsoft won’t fix
Tags: api, control, credentials, cve, endpoint, exploit, flaw, framework, ivanti, leak, microsoft, monitoring, ntlm, powershell, programming, rce, remote-code-execution, service, vulnerabilityServiceDescriptionImporter class,” he said. “That mechanism alone enabled successful exploitation in products from Barracuda, Ivanti, Microsoft and Umbraco, and it took only a few days of review to find working cases.” The .NET Framework and ASP.NET are among the most popular programming languages for enterprise applications. When a developer wants their application to communicate with…
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The nexus of risk and intelligence: How vulnerability-informed hunting uncovers what everything else misses
Tags: access, attack, authentication, business, cisa, compliance, cve, cvss, dark-web, data, defense, detection, dns, edr, endpoint, exploit, framework, intelligence, kev, linux, malicious, mitigation, mitre, monitoring, ntlm, nvd, open-source, password, powershell, remote-code-execution, risk, risk-management, siem, soc, strategy, tactics, technology, threat, update, vulnerability, vulnerability-managementTurning vulnerability data into intelligence: Once vulnerabilities are contextualized, they can be turned into actionable intelligence. Every significant CVE tells a story, known exploit activity, actor interest, proof-of-concept code or links to MITRE ATT&CK techniques. This external intelligence gives us the who and how behind potential exploitation.For example, when a privilege escalation vulnerability in Linux…
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Cyber agencies produce ‘long overdue’ best practices for securing Microsoft Exchange Server
The guidance: The guidance states admins should treat on-prem Exchange servers as being “under imminent threat,” and itemizes key practices for admins:First, it notes, “the most effective defense against exploitation is ensuring all Exchange servers are running the latest version and Cumulative Update (CU)”;It points out that Microsoft Exchange Server Subscription Edition (SE) is the…
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Cyber agencies produce ‘long overdue’ best practices for securing Microsoft Exchange Server
The guidance: The guidance states admins should treat on-prem Exchange servers as being “under imminent threat,” and itemizes key practices for admins:First, it notes, “the most effective defense against exploitation is ensuring all Exchange servers are running the latest version and Cumulative Update (CU)”;It points out that Microsoft Exchange Server Subscription Edition (SE) is the…
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Microsoft Boosts Windows Security by Disabling File Previews for Downloads
Microsoft has rolled out a significant security enhancement to Windows File Explorer, automatically disabling the preview pane for files downloaded from the internet as part of security updates released on and after October 14, 2025. This proactive measure targets a long-standing vulnerability that attackers have exploited to harvest NTLM hashes and sensitive credentials used for…
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CISA Flags Highly Exploitable Windows SMB Flaw
Tags: attack, cisa, cybersecurity, exploit, flaw, infrastructure, microsoft, mitigation, network, ntlm, windowsNTLM Reflection Attack Strikes Again. A three-month old flaw in a network protocol for file sharing used by Microsoft is under active exploitation, warns the U.S. Cybersecurity and Infrastructure Security Agency. The flaw’s exploitation bypasses mitigations Microsoft has built over the years to prevent NTLM reflection attacks. First seen on govinfosecurity.com Jump to article: www.govinfosecurity.com/cisa-flags-highly-exploitable-windows-smb-flaw-a-29778
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Service Accounts in Active Directory: These OG NHIs Could Be Your Weakest Link
While non-human identities (NHIs) in cloud and SaaS operations may be getting lots of attention right now, securing your Active Directory service accounts can go a long way in reducing risk. Here are three steps you can take right now. Key takeaways Expect sprawl: Agentic AI and cloud native development accelerate non-human identity (NHI) growth. …
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Microsoft’s Patch Tuesday: About 80 Vulnerabilities Patched
An elevation of privilege vulnerability in the Windows NTLM authentication protocol and a flaw in Office’s Preview Pain are among the most important to patch. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-microsoft-patch-tuesday-september-2025/
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Microsoft’s Patch Tuesday: About 80 Vulnerabilities Patched
An elevation of privilege vulnerability in the Windows NTLM authentication protocol and a flaw in Office’s Preview Pain are among the most important to patch. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-microsoft-patch-tuesday-september-2025/
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Microsoft Patchday September 2025 – HPC Pack mit CVSS 9.8 und NTLM mit 8.8 als Hauptangriffsvektoren
First seen on security-insider.de Jump to article: www.security-insider.de/microsoft-patchday-september-2025-windows-updates-a-6a6019204714a5acc7ec85e52d6b014f/
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MITM6 + NTLM Relay Attack Enables Full Domain Compromise
Cybersecurity researchers are highlighting a dangerous attack technique that combines rogue IPv6 configuration with NTLM credential relay to achieve complete Active Directory domain compromise, exploiting default Windows configurations that most organizations leave unchanged. Attack Leverages Default Windows IPv6 Behavior The MITM6 + NTLM Relay attack exploits Windows systems’ automatic DHCPv6 requests, even in networks that…
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MITM6 + NTLM Relay: How IPv6 Auto-Configuration Leads to Full Domain Compromise
Tags: ntlmFirst seen on resecurity.com Jump to article: www.resecurity.com/blog/article/mitm6-ntlm-relay-how-ipv6-auto-configuration-leads-to-full-domain-compromise
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Microsoft Entra Private Access brings conditional access to on-prem Active Directory
Susan Bradley / CSOThe deepest level of auditing, including workgroup and domain authentication attempts that use NTLM, can be achieved by setting:Network security: Restrict NTLM: Outgoing NTLM traffic to remote servers = Audit AllNetwork security: Restrict NTLM: Audit NTLM authentication in this domain = Enable allNetwork security: Restrict NTLM: Audit Incoming NTLM Traffic = Enable…
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Windows tips for reducing the ransomware threat
Tags: access, attack, authentication, backup, breach, cloud, computer, control, credentials, government, identity, infrastructure, login, mfa, microsoft, monitoring, network, ntlm, passkey, privacy, ransomware, risk, service, threat, windowsSusan Bradley / CSOIdeally you should have no such protocols observed.
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DNN Vulnerability Exposes NTLM Credentials via Unicode Normalization Bypass
Security researchers have discovered a critical vulnerability in DNN (formerly DotNetNuke), one of the oldest open-source content management systems, that allows attackers to steal NTLM credentials through a sophisticated Unicode normalization bypass technique. The vulnerability, tracked as CVE-2025-52488, affects the widely-used enterprise CMS platform and demonstrates how defensive coding measures can be circumvented through carefully…
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NTLM relay attacks are back from the dead
NTLM relay attacks are the easiest way for an attacker to compromise domain-joined hosts. While many security practitioners think NTLM relay is a solved problem, it is not … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2025/07/04/ntlm-relay-attacks/