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CVE-2026-70340: Azure CycleCloud Elevation of Privilege Vulnerability

highCVSS 8.1CVE-2026-70340
Missing authorization in Azure CycleCloud allows an authorized attacker to elevate privileges over a network.

CSIRTS triage

vendor: Microsoftproduct: Azure CycleCloudPrivilege escalation
What
Missing authorization in Azure CycleCloud allows an authorized attacker to elevate privileges over a network.
Who is affected
Azure CycleCloud deployments with unpatched versions are affected by authenticated attackers.
Urgency
High priority; privilege escalation with high CVSS (8.1) affecting authenticated users requires urgent patching.
Action
Apply the latest Azure CycleCloud security update immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.1
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70340

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-70340coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Azure CycleCloud 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.

More from Microsoft Security Response Center