[CISA KEV] CVE-2026-85880 — Microsoft Windows: Microsoft Windows Heap-Based Buffer Overflow Vulnerability

CVE: CVE-2026-85880 Vendor: Microsoft Product: Windows Vulnerability: Microsoft Windows Heap-Based Buffer Overflow Vulnerability Date Added: 2026-09-08 Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Note