CVE-2026-77897 Microsoft Power Automate Desktop Elevation of Privilege Vulnerability
An authorized local attacker can exploit relative path traversal in Power Automate Desktop to elevate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77897?
CVE-2026-77897 is a high-severity path traversal vulnerability in Microsoft Power Automate agent for virtual desktops, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Relative path traversal in Power Automate allows an authorized attacker to elevate privileges locally.
Weakness: CWE-23
Which versions are affected by CVE-2026-77897?
It affects 1 product.
Products include Microsoft Power Automate for Desktop.
How do I fix CVE-2026-77897?
No fix has been published for CVE-2026-77897 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-77897 being exploited?
There is no known exploitation of CVE-2026-77897 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Power Automate agent for virtual desktops
- CVE-2025-47966 Power Automate Elevation of Privilege Vulnerability
- CVE-2025-21187 Microsoft Power Automate Remote Code Execution Vulnerability
- CVE-2026-40374 Microsoft Power Automate Desktop Information Disclosure Vulnerability
- CVE-2025-29817 Microsoft Power Automate Desktop Information Disclosure Vulnerability
Sources
Also known as GHSA-wf4r-6fvq-98c6.