Windows FTP Service Remote Code Execution Vulnerability
Critical vendor advisory
CVE-2026-49172
Summary
Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a network. Published in July 2026 Security Updates. MSRC exploitability: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely.
Why it matters
Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates.
Operator check
Review the Microsoft Security Update Guide entry for CVE-2026-49172. Confirm whether Windows FTP Service is deployed, then apply the current security update or documented mitigation. CVSS score: 9.8.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.