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CVE-2024-21412: Microsoft Defender Zero-Day Exploitation and Analysis
Analysis of a Microsoft Defender zero-day vulnerability used to extract NTLM hashes from the SAM database and achieve system-level privileges.
Claude Mythos Preview: Anthropic Limits Access to Vulnerability AI
Anthropic restricts Claude Mythos Preview access to critical infrastructure providers due to its advanced capability to exploit zero-day vulnerabilities.
Microsoft Defender RedSun Zero-Day PoC Grants SYSTEM Privileges
Security researcher Chaotic Eclipse releases the RedSun zero-day PoC for Microsoft Defender, enabling local privilege escalation to SYSTEM on Windows devices.
Microsoft Defender Zero-Day and 17-Year-Old Excel RCE Exploitation
Analysis of recent threats including a Microsoft Defender zero-day, SonicWall brute-force campaigns, and critical RCE in legacy Microsoft Excel components.
Microsoft April 2026 Patch Tuesday: 164 CVEs and Two Zero-Days
Microsoft's April 2026 Patch Tuesday addresses 164 vulnerabilities, including two exploited zero-days and eight critical RCE flaws. Read our technical analysis.
Microsoft Patch Update: Zero-Day Privilege Elevation Dominates
Microsoft's latest patch update addresses 165 vulnerabilities, with over half being privilege elevation flaws, including two actively exploited zero-days.
April 2026 Patch Tuesday: SharePoint Zero-Day, BlueHammer, & Adobe RCE
Microsoft's April 2026 Patch Tuesday addresses 167 vulnerabilities, including a SharePoint Server zero-day, Windows Defender 'BlueHammer' flaw, and an actively exploited
Cisco FMC Zero-Day Exploited by Interlock Ransomware: March 2026 CVEs
Runtime Rebel analyzes March 2026's significant rise in high-impact CVEs, including a Cisco FMC zero-day actively exploited by Interlock Ransomware. Learn critical
Adobe Acrobat & Reader Zero-Day Exploitation: Immediate Patch Required
Adobe has patched an actively exploited Zero-Day in Acrobat and Reader. Attackers used crafted PDF files for at least four months. Update immediately.
CVE-2026-34621: Adobe Acrobat and Reader Zero-Day Emergency Patch
Adobe issues an emergency fix for CVE-2026-34621, a critical Acrobat and Reader zero-day exploited in the wild. Learn technical details and mitigation steps.
CVE-2026-34621: Adobe Reader Zero-Day Exploited for Months Patched
Adobe releases critical updates for CVE-2026-34621, an Acrobat and Reader zero-day used for remote code execution. Patch immediately to prevent exploitation.
Adobe Reader Zero-Day Exploited via Malicious PDF Documents
Researchers reveal a sophisticated Adobe Reader zero-day exploit used in the wild since late 2025, involving malicious PDF invoices to compromise systems.