What is CVE-2026-40374?

CVE-2026-40374 is a medium-severity vulnerability in Microsoft Power Automate For Desktop, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-05-12.

How severe is CVE-2026-40374?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Information disclosure in Microsoft Power Automate For Desktop

CVE-2026-40374

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

Vulnerability class: Information Disclosure

EPSS: 0.001 (27.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Microsoft Power Automate For Desktop — versions 1.0.0.0
Microsoft Power_automate_for_desktop

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

Microsoft Power Automate Desktop Information Disclosure Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40374?: CVE-2026-40374 is a medium-severity vulnerability in Microsoft Power Automate For Desktop, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-05-12.
How severe is CVE-2026-40374?: Medium severity. CVSS v3 base score is 6.5 out of 10.