CyberICT

CVE-2026-55005

Microsoft · Published July 14, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

Microsoft Exchange Server Remote Code Execution Vulnerability. Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

Affected Products

  • Microsoft Exchange Server 2016 Cumulative Update 23
  • Microsoft Exchange Server Subscription Edition RTM
  • Microsoft Exchange Server 2019 Cumulative Update 15
  • Microsoft Exchange Server 2019 Cumulative Update 14

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C