CVE-2026-65818: Power Automate Elevation of Privilege Vulnerability

highCVSS 8.5CVE-2026-65818

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

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 8.5
Published: 2026-09-08
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65818

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-658180.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-65818	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Power Automate Elevation

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-77897: Relative path traversal in Power Automate allows an authorized attacker to elevate privileges …nvd · 2026-09-08
highCVE-2026-77897: Microsoft Power Automate Desktop Elevation of Privilege Vulnerabilitymsrc · 2026-09-08
highCVE-2026-65818: Server-side request forgery (ssrf) in Power Automate allows an authorized attacker to elevate …nvd · 2026-09-03