cve-2026-55007

This tag covers CVE-2026-55007, a Microsoft Exchange Server remote code execution vulnerability rated Important. The flaw is a double-free memory-management issue (CWE-415) in on-premises Exchange that could allow an unauthenticated attacker to execute code over a network by sending a specially crafted Visio attachment. If processed during content indexing, exploitation could compromise confidentiality, integrity, and availability. Microsoft has released fixes for this vulnerability. Discussions here focus on understanding the technical details, potential impact, and applying the necessary updates to protect affected Exchange servers.