Threat Brief: Microsoft Vulnerability CVE-2020-16898
Summary: In October 2020, Microsoft's Patch Tuesday security update addressed CVE-2020-16898, a critical vulnerability in the Windows TCP/IP stack that handles IPv6 Router Advertisement Options known as DNS RA options. Current exploitation leads to a denial of service with the possibility of remote code execution, and the flaw affects multiple Windows versions that support IPv6 RDNSS, which was added starting with Windows 10, version 1709.
Why it matters: Until patched, Microsoft's mitigation requires disabling IPv6 RDNSS interface by interface with netsh commands - a manual, per-interface task across every affected Windows 10 1709-or-later host in the estate, while exploitation can already cause a denial of service and potentially remote code execution.
Read the original at Unit 42 Palo Alto Networks ↗
- Topics
- Vulnerabilities & Patching
- Mentions
- CVE-2020-16898
- Related
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