CVE-2026-70340Network attack vector

Authenticated privilege escalation via missing authorization

Published Aug 11, 2026 · Updated Aug 25, 2026

Missing authorization in Microsoft Azure CycleCloud before 8.9.1 allows remote authenticated users to elevate privileges over a network. Microsoft's CNA record and advisory identify CWE-862, but public records do not disclose the affected endpoint or state transition that fails to enforce authorization on a user-controlled request. Reachability requires valid credentials and network access to a vulnerable CycleCloud deployment; Microsoft's published assessment indicates integrity and availability impact, with no published confidentiality impact in the vendor score.

CVSS severity8.1
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in Microsoft Azure CycleCloud before 8.9.1 allows remote authenticated users to elevate privileges over a network. Microsoft's CNA record and advisory identify CWE-862, but public records do not disclose the affected endpoint or state transition that fails to enforce authorization on a user-controlled request. Reachability requires valid credentials and network access to a vulnerable CycleCloud deployment; Microsoft's published assessment indicates integrity and availability impact, with no published confidentiality impact in the vendor score.

The record

CVE
CVE-2026-70340
Published
Aug 11, 2026
Updated
Aug 25, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1MicrosoftCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo