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...
Siemens has published a security advisory for Opcenter Quality that maps seven distinct CVEs affecting SmartClient modules (Opcenter QL Home), SOA Audit and SOA Cockpit — the vulnerabilities range from incorrect authorization and insufficient session expiration to support for legacy TLS...
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...
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...
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...
Unpatched directory services can be the digital equivalent of leaving your front door wide open—and that’s precisely the lesson Windows administrators should take to heart with the recent discovery of CVE-2025-27469. This vulnerability, focused on the Windows Lightweight Directory Access...
The latest twist in the cybersecurity saga focuses on a newly discovered vulnerability—CVE-2025-26670—which targets the Windows Lightweight Directory Access Protocol (LDAP) client. This particular use-after-free flaw is a stark reminder that even the most established and “boring” components of...
It seems to coincide with a warning on the Windows 2022 member server event ID 40970 LSA (LSASrv) The security System has detected a downgrade attempt when contacting the 3-part SPN LDAP/Domain Controller FQDN/Domain@Domain with error code "The encryption type is not supported by the KDC...
access issues
authentication
domain controller
downgrade attempt
error codes
event id
file explorer
group policy
kdc
ldap
name resolution
network connectivity
processing failures
retry mechanism
security
server management
troubleshooting
windows server
workstation access
In an era where every device on your network is a potential entry point for attackers, the latest revelations surrounding Xerox VersaLink printer vulnerabilities serve as a stark reminder of the hidden risks. These vulnerabilities not only jeopardize the printers themselves but also pave the way...
In this month’s patch update round-up, cybersecurity experts are ringing alarm bells for CISOs and Windows administrators alike. The spotlight falls on two actively exploited Windows Server vulnerabilities—one in the Windows Storage component and a more critical weakness in the Windows Ancillary...
Brace yourselves, Windows aficionados, because we've got quite the cocktail of cybersecurity intrigue for you today. Imagine if your Windows Server, the no-fuss, reliable workhorse of your IT infrastructure, suddenly becomes a victim of its own architecture—a chilling thought, isn't it? This...
In the ever-evolving cat-and-mouse game of cybersecurity, there's a new player in town—CVE-2024-49113. This is not just another random string of letters and numbers, folks. It represents a new adversary in the form of a denial-of-service (DoS) vulnerability lurking within the Windows Lightweight...
The cybersecurity spotlight has turned to a critical vulnerability in Windows' Lightweight Directory Access Protocol (LDAP), cataloged as CVE-2024-49112. Making waves in the security realm, researchers from SafeBreach Labs have released a Proof-of-Concept (PoC) exploit, ominously dubbed...
In the ever-expandable universe of cybersecurity threats, vulnerabilities like CVE-2024-49127 have emerged, drawing the attention of IT professionals and everyday users alike. This vulnerability affects the Windows Lightweight Directory Access Protocol (LDAP), allowing remote code execution that...
On December 10, 2024, a serious vulnerability known as CVE-2024-49113 was officially reported concerning the Windows Lightweight Directory Access Protocol (LDAP). This vulnerability poses a potential Denial of Service (DoS) threat, which could leave systems vulnerable to disruptions and...
On December 10, 2024, the Microsoft Security Response Center (MSRC) shed light on a significant vulnerability designated as CVE-2024-49124. This security flaw primarily affects the Lightweight Directory Access Protocol (LDAP) client, opening up pathways for remote code execution. For enterprises...
As we sail closer to the end of 2024, the cyber world continues to buzz with security revelations. Among the latest is a noteworthy advisory concerning CVE-2024-49121, which pertains to a critical vulnerability in the Windows Lightweight Directory Access Protocol (LDAP). This vulnerability poses...
マイクロソフトでは、2020 年初頭に、Active Directory ドメイン環境内の LDAP 通信の安全性を向上するために、LDAP 署名、およびLDAP チャネルバインディング （LDAPS 利用時）を既定で有効化します。
The post [AD管理者向け] 2020 年 LDAP 署名と LDAP チャネルバインディングが有効化。確認を！ appeared first on Microsoft Security Response Center.
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