Windows Server
Why Active Directory weaknesses stay open for years in teams with one or two admins
David Fuhr, CTO at intcube, talks about a security cohort for public administration, where 27 municipalities hardened Windows Server and Active Directory together over 12 …
Microsoft fixes exploited Mark of the Web bypass vulnerability (CVE-2026-96951)
In another record-breaking Patch Tuesday, Microsoft has squashed over 1,400 security bugs, including a Mark of the Web bypass vulnerability (CVE-2026-96951) exploited by …
September 2026 Patch Tuesday: Record patch count, 2 zero-days, and a SigRed successor
September 2026 Patch Tuesday is here, with Microsoft delivering another record-breaking number of patches, including those for two vulnerabilities that have been exploited as …
PoC exploit released for critical AD CS domain-takeover flaw (CVE-2026-54121)
Security researchers who discovered and reported CVE-2026-54121 (aka “Certighost”), a critical privilege elevation vulnerability in Active Directory Certificate …
Microsoft tightens Windows enterprise activation security
Microsoft is making Trusted Platform Module (TPM)-backed attestation a requirement for Windows Key Management Service (KMS), the on-premises service used for Windows volume …
Windows Netlogon RCE exploited, domain controllers at risk (CVE-2026-41089)
CVE-2026-41089, a critical Windows Netlogon RCE flaw that allows remote code execution, is now actively exploited in the wild, the Centre for Cybersecurity Belgium (CCB) …
Microsoft provides mitigation for “YellowKey” BitLocker bypass flaw (CVE-2026-45585)
Microsoft is working on a fix for CVE-2026-45585 (aka “Yellowkey”), a vulnerability that can be used by attackers to bypass protections offered by BitLocker, the …
Microsoft May 2026 Patch Tuesday: Many fixes, but no zero-days
Microsoft has marked May 2026 Patch Tuesday by releasing fixes for 120+ CVE-numbered vulnerabilities, none of which (for a change) are actively exploited or have been publicly …
CISA, Microsoft warn of active exploitation of Windows Shell vulnerability (CVE-2026-32202)
Attackers are exploiting CVE-2026-32202, a zero-click Windows Shell spoofing vulnerability that causes victims’ systems to authenticate the attacker’s server, CISA …
BlueHammer: Windows zero-day exploit leaked
A buggy but functional proof-of-concept (PoC) exploit for an unpatched Windows local privilege escalation vulnerability dubbed BlueHammer has been published on GitHub by …
Attackers use Windows App-V scripts to slip infostealer past enterprise defenses
A malware delivery campaign detailed by Blackpoint researchers employs an impressive array of tricks to deliver an infostealer to employees without triggering enterprise …
Attackers exploiting WSUS vulnerability drop Skuld infostealer (CVE-2025-59287)
Attackers have been spotted exploiting the recently patched WSUS vulnerability (CVE-2025-59287) to deploy infostealer malware on unpatched Windows servers. An out-of-band …
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