Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-65818

CVE-2026-65818CRITICAL

Microsoft Microsoft Power Platform — Power Automate Elevation of Privilege Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  C  H  H  H    9.9   .0063   48.5     —

AFFECTED
  Product                   Versions  Fixed
  Microsoft Power Platform  - –       —

TIMELINE
  Jul 22  Reserved by microsoft
  Sep 3   Published (CNA: microsoft)
  Sep 8   RESCORED — CVE-2026-65818 (Microsoft Power Platform). CVSS 8.5 → 9.9 (NVD).

CWE-918 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

Server-side request forgery (ssrf) in Power Automate allows an authorized attacker to elevate privileges over a network.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 22, 2026	Reserved	Reserved by microsoft
September 3, 2026	Published	Published (CNA: microsoft)
September 8, 2026	RESCORED	RESCORED — CVE-2026-65818 (Microsoft Power Platform). CVSS 8.5 → 9.9 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Microsoft Power Platform	—	-	—

Weaknesses

CWE-918

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65818 [vendor-advisory, patch]

Authoritative record: CVE-2026-65818 at cve.org

Vendors: microsoft

Weaknesses: CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-65818 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.