Microsoft Power Automate Desktop Information Disclosure Vulnerability

CVE-2026-40374 is an information disclosure vulnerability in Power Automate (rated Important, CVSS 6.5).

1 version

Microsoft id: CVE-2026-40374
Products: Power Automate
Severity: Important
Impact: Information Disclosure
CVSS: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation Less Likely
Customer action required: Yes
Release: 2026-May
Assigned by: Microsoft
Weakness: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
MSRC revision: 1.0
Status pages: Power Automate status
First captured by us: 13 Nov 2026, 15:51 UTC (from our first import of this list)
Microsoft last modified: 12 May 2026, 14:00 UTC
Source: Security updates · open the original at Microsoft

Microsoft's revision notes

Exposure of sensitive information to an unauthorized actor in Power Automate allows an authorized attacker to disclose information over a network.

Security updates, 14:00 UTC, 12 May

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

First version we captured · 15:51 UTC, 13 Nov
The text as we first saw it
Seen by us 15:51 UTC, 13 Nov · Microsoft's timestamp 14:00 UTC, 12 May · Microsoft's page

Last updated 13 Nov 2026, 15:51 UTC