Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-47280
CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence
Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-26. the CNA's CVSS baseline 10.0; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
10.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 10.0Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 10.0
- EG Score
- 10.0(medium)
- EPSS
- 39.0%
- KEV
- Not listed
Published
May 26, 2026
Last Modified
June 19, 2026
Advisory Details (1)
Auto-updated Jul 14, 2026Patch available. Sources: microsoft.
microsoft Patch Available
Security Update Guide - Microsoft Security Response Center
Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47280Vendor Advisories for CVE-2026-47280(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Frequently asked(5)
What is CVE-2026-47280?
CVE-2026-47280 is a critical vulnerability published on May 26, 2026. Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a network.
When was CVE-2026-47280 disclosed?
CVE-2026-47280 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on June 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47280 actively exploited?
CVE-2026-47280 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 39.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47280?
CVE-2026-47280 has a CVSS v4.0 base score of 10.0 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-47280?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47280, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-47280
Is Your Infrastructure Affected by CVE-2026-47280?
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