CVE-2026-26137 CRITICAL

CVE-2026-26137: Microsoft Exchange Elevation of Privilege Vulnerability

Vendor Microsoft
Product Microsoft Exchange Online
Weakness CWE-918 · SSRF
Published March 19, 2026
Last update April 14, 2026
View on NVD All CVEs

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.

Key dates

02Disclosure timeline

March 19, 2026 CVE published
April 14, 2026 Record updated

Related vulnerabilities

04Related CVE

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