Latest cybersecurity reporting from selected sources.

LegacyHive PoC exposes a Windows Privilege Escalation flaw affecting fully patched Windows desktop and server systems. Just hours after Microsoft’s July 2026 Patch Tuesday, security researcher Nightmare Eclipse, also known as Chaotic Eclipse, published a new Windows zero-day proof-of-concept called LegacyHive. This time, the target is the Windows User Profile Service (ProfSvc), and unlike the […]

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds SonicWall and Microsoft flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added SonicWall and Microsoft flaws to its Known Exploited Vulnerabilities (KEV) catalog. The flaws added to the catalog are: This week, SonicWall confirmed the active exploitation of two zero-day vulnerabilities […]

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 […]

The researcher Chaotic Eclipse released a PoC for the RoguePlanet Microsoft Defender zero-day, which can grant SYSTEM privileges on fully patched Windows systems. Security researcher Chaotic Eclipse, also known as Nightmare-Eclipse, has published a new proof-of-concept exploit for a RoguePlanet Microsoft Defender zero-day. The flaw relies on a race condition that can provide attackers with […]

Microsoft Patch Tuesday security updates for June 2026 fix a record 208 CVEs, including one actively exploited zero-day and multiple critical RCE flaws. Microsoft Patch Tuesday security updates for June 2026 mark a record. Microsoft shipped fixes for 208 CVEs across Windows, Office, Azure, Exchange, Hyper-V, Secure Boot, BitLocker, and a range of AI tooling. […]

A researcher publicly released a VS Code exploit within hours, citing past disputes with Microsoft over bug handling. The security researcher Ammar Askar found a new serious zero-day in Visual Studio Code, told a contact at GitHub about it, and published a working exploit one hour later. “Just by clicking a link, it’s possible for […]

A researcher dropped 6 Windows zero-days with no warning. Three are now exploited in the wild. Microsoft is angry. The researcher says Microsoft ignored them first. Over the past month, a researcher going by Chaotic Eclipse, also known as Nightmare-Eclipse, publicly released details of six unpatched vulnerabilities in Windows components including Defender and BitLocker. No […]