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CVE-2026-59118: Microsoft Power Apps Elevation of Privilege Vulnerability

criticalCVSS 9.3CVE-2026-59118
Improper authorization in Microsoft Power Apps allows an unauthorized attacker to elevate privileges over a network.

CSIRTS triage

vendor: Microsoftproduct: Microsoft Power AppsPrivilege escalation
What
Improper authorization allows unauthorized attackers to elevate privileges over the network.
Who is affected
All Microsoft Power Apps deployments are affected.
Urgency
Critical severity (CVSS 9.3); not yet exploited but requires immediate remediation.
Action
Apply the latest security patch from Microsoft for Power Apps.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
critical — CVSS 9.3
Published
2026-08-06
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59118

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-59118coverage & exploitation statusNVD · CVE.org

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