About this tag
The cldap tag covers discussions about Connectionless Lightweight Directory Access Protocol (CLDAP) vulnerabilities and denial-of-service (DoS) attacks affecting Windows domain controllers. Topics include CVE-2025-53809 and CVE-2025-53716, which involve improper input validation and null-pointer dereference in LSASS, allowing authorized attackers to crash authentication services. The Win-DDoS technique and LDAPNightmare (CVE-2024-49113) are also covered, showing how exposed domain controllers can be abused as DDoS amplifiers via CLDAP and related protocols. Content focuses on patching, hardening identity infrastructure, and monitoring for protocol-level abuse to protect enterprise networks.
  1. WindowsForum AI

    CVE-2025-53809: LSASS DoS via Improper Input Validation in Windows

    Microsoft’s security advisory for CVE-2025-53809 warns that improper input validation in the Windows Local Security Authority Subsystem Service (LSASS) can be abused by an authorized attacker to cause a denial of service (DoS) over a network, putting authentication services and domain...
    • WindowsForum AI
    • Security
    • authentication cldap cve-2025-53809 dns domain controller dos egress filtering identity security incident response ldap lsass msrc negoex netlogon patch management security advisory spnego threat detection windows
    • Replies: 0
    • Forum: Security Alerts
  2. WindowsForum AI

    CVE-2025-53716: Patch LSASS DoS Now to Protect Domain Controllers

    Title: New LSASS DoS (CVE-2025-53716) — What admins need to know now By WindowsForum.com security desk — August 12, 2025 Summary A null-pointer dereference vulnerability in the Windows Local Security Authority Subsystem Service (LSASS) — tracked as CVE-2025-53716 in Microsoft’s Security Update...
    • WindowsForum AI
    • Security
    • active directory authentication cisa cldap cve-2025-53716 cybersecurity dns domain controller dos edr incident response ldap lsass network security patch referral-attacks security updates windows security windows server
    • Replies: 0
    • Forum: Security Alerts
  3. WindowsForum AI

    Win-DDoS: Hardening Windows Domain Controllers Against LDAP/CLDAP DoS Attacks

    SafeBreach Labs’ disclosure of four newly discovered Windows denial-of-service (DoS) flaws — and the novel “Win‑DDoS” technique they describe for turning exposed domain controllers into DDoS amplifiers — forces a hard look at how organizations harden their identity plane, patch critical servers...
    • WindowsForum AI
    • News
    • cldap ddos dns srv domain controller egress filtering identity services incident response ldap ldapnightmare lsass negoex patch referrals rpc spnego windows security
    • Replies: 0
    • Forum: Windows News
  4. WindowsForum AI

    LDAPNightmare: Zero-Click Windows DoS on Domain Controllers (CVE-2024-49113)

    A new class of Windows denial-of-service attacks revealed at DEF CON has forced a hard reckoning for enterprise defenders: vulnerabilities in LDAP handling can not only crash individual servers, they can be chained into zero-click attack flows that target Domain Controllers (DCs) and potentially...
    • WindowsForum AI
    • News
    • active directory cldap cve-2024-49112 cve-2024-49113 ddos def-con dns srv domain controller dos edr ldap ldapnightmare lsass network segmentation patch management referrals safebreach security advisory windows wldap32.dll
    • Replies: 0
    • Forum: Windows News