Microsoft blames North Korea's Sapphire Sleet for Mastra npm compromise

What I appreciate most about this write‑up is how it shows the people behind the work. Threat intelligence isn’t just indicators and payloads — it’s analysts, engineers, and responders connecting dots across thousands of signals to protect customers before they even know they’re at risk. Proud to work alongside teams at Microsoft who treat this work as a responsibility to the broader ecosystem, not just our own products.

RoguePlanet Defender zero-day: The "RoguePlanet" zero-day (CVE-2026-50656) is a critical reminder that our security tools can sometimes become the attack surface itself. Microsoft has confirmed this privilege escalation flaw in the Malware Protection Engine, which allows attackers to gain SYSTEM-level access via a race condition. Crucially, the exploit functions whether Real-Time Protection is enabled or disabled, making it a high-priority concern for infrastructure teams until an official patch is released. Impact: Local privilege escalation to NT AUTHORITY\SYSTEM. Microsoft is currently developing a fix; no patch is available yet. Read the full technical breakdown here: https://lnkd.in/d9TmRPsF #CyberSecurity #InfoSec #CISO #VulnerabilityManagement #MicrosoftDefender #ThreatIntel

Microsoft has formally disclosed that it's working to release a patch to address a Defender zero-day codenamed RoguePlanet. The vulnerability has now been assigned the CVE identifier CVE-2026-50656 (CVSS score: 7.8), with the tech giant describing it as a privilege escalation flaw. "Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender

Microsoft has formally disclosed that it's working to release a patch to address a Defender zero-day codenamed RoguePlanet. The vulnerability has now been assigned the CVE identifier CVE-2026-50656 (CVSS score: 7.8), with the tech giant describing it as a privilege escalation flaw. "Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender

Microsoft Confirms RoguePlanet Defender Zero-Day, Says Patch is in Development: Microsoft has formally disclosed that it's working to release a patch to address a Defender zero-day codenamed RoguePlanet. The vulnerability has now been assigned the CVE identifier CVE-2026-50656 (CVSS score: 7.8), with the tech giant describing it as a privilege escalation flaw. "Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender

Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed “RoguePlanet,” and confirmed it is actively developing a security patch to address the flaw. https://lnkd.in/eq6V7phN

Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed “RoguePlanet,” and confirmed it is actively developing a security patch to address the flaw. https://lnkd.in/e36BgXrT

Microsoft Confirms Defender RoguePlanet 0-Day Exploit and Working to Release Patch June 18, 2026 Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed “RoguePlanet,” and confirmed it is actively developing a security patch to address the flaw. Tracked as CVE-2026-50656, the vulnerability was formally published on June 16, 2026, by the Microsoft Security Response Center (MSRC) and carries a CVSS score of 7.8 (Important) under the CVSS 3.1 scoring framework....

Microsoft Confirms RoguePlanet Zero-Day in Defender, Patch Under Development: Microsoft confirmed the RoguePlanet Defender zero-day (CVE-2026-50656), a privilege escalation flaw, and is developing a security patch. Microsoft has acknowledged the RoguePlanet zero-day affecting Microsoft Defender, tracked as CVE-2026-50656 (CVSS score of 7.8). The vulnerability allows privilege escalation through the Microsoft Malware Protection Engine. The company stated it is aware of the issue and is […]

🚨 Microsoft Defender zero-day RoguePlanet is now officially CVE-2026-50656. Microsoft is preparing a patch for the Malware Protection Engine flaw, which can enable privilege escalation. A public PoC describes a race condition that may grant SYSTEM-level privileges. Read: https://lnkd.in/gmSjFsxX