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Vulnerability record · CVE-2026-59118 · published 7 August 2026

CVE-2026-59118: Microsoft power apps improper authorization vulnerability

Microsoft · Power Apps

Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.

9.3 CVSS 3.1 Critical EPSS 0.72% · top 48.1% CWE-285 · Improper authorization
9.3CVSS 3.1 base score
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
11 Aug 2026Last modified by NVD

Description

Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59118 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-59118), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.