Microsoft Warns of Zero-Day Attack on Office
Summary: Microsoft warned that attackers are exploiting a previously unknown vulnerability in older versions of Microsoft Office and Windows, using email that entices victims to open a specially crafted Word attachment, with attacks so far carefully carried out against selected computers largely in the Middle East and South Asia. Microsoft shipped an interim Fix-It tool while it develops a full patch, and said the flaw affects Office 2003 and 2007, plus Office 2010 only when running on Windows XP or Windows Server 2003, but not Office 2013.
What you should know: The exploit combines multiple techniques to bypass data execution prevention and address space layout randomization, so the defenses many organizations count on did not stop it, and the news surfaced less than 48 hours after Microsoft expanded its $100,000 bug bounty for novel evasion techniques.
Read the original at Krebs on Security ↗
- Topics
- Vulnerabilities & Patching
- Related
- Attackers Exploit UnrealIRCd Flaw That Enables Server-Level Command Injection Cyber Risks · Nov 14, 2026U.S. CISA adds Check Point and UnrealIRCd flaws to its Known Exploited Vulnerabilities catalog Cyber Risks · Nov 14, 2026PostgreSQL Patches 52 Flaws, Including 22-Year-Old Bug Enabling Authenticated RCE Cyber Risks · Nov 13, 2026