Submission + - Microsoft Working to Patch 'RoguePlanet' Zero-Day (securityweek.com)
wiredmikey writes: Microsoft on Wednesday published an advisory acknowledging the public disclosure of a vulnerability in Defender that could lead to privilege escalation. The security defect, tracked as CVE-2026-50656 (CVSS score of 7.8), was dropped last week by security researcher Nightmare Eclipse (also known as Chaotic Eclipse). The researcher released a proof-of-concept (PoC) exploit that demonstrates local privilege escalation (LPE) on Windows 11 and Windows 10 systems with the June 2026 patches installed.
On Wednesday, Nightmare Eclipse pointed out that the PoC works regardless of whether Defender’s real-time protection is enabled or disabled. It may even work in passive mode, the researcher said.
On Wednesday, Nightmare Eclipse pointed out that the PoC works regardless of whether Defender’s real-time protection is enabled or disabled. It may even work in passive mode, the researcher said.