CVE-2026-77897: Microsoft Power Automate Desktop Elevation of Privilege Vulnerability

Overview

Severity
High (CVSS 7)
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Elevation of Privilege
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Sep
Released
2026-09-08

Description

Relative path traversal in Power Automate allows an authorized attacker to elevate privileges locally.

FAQ

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition. What action should customers take to address this vulnerability? Customers should update Power Automate for desktop to the latest available version. Customers who have the Power Automate agent for virtual desktops installed on Citrix or another machine must also update that agent to version 2.71.115.26224 or later. What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Affected Products (2)

Microsoft Dynamics

  • Power Automate for Desktop
  • Power Automate agent for virtual desktops

Security Updates (2)

Acknowledgments

<a href="https://github.com/alaatk">Alaa Kachouh</a>, Ali Jammal

Revision History

  • 2026-09-08: Information published.