CVE-2026-77909Network attack vector

Authenticated credential disclosure

Published Sep 8, 2026 · Updated Sep 9, 2026

Insufficient credential protection in Microsoft Azure CycleCloud before 8.9.2 allows remote authenticated users to disclose credentials. Microsoft identifies credential protection as the affected locus but has not published the storage or transmission operation that exposes the credentials. A low-privileged account and network access are required; successful exploitation crosses a security boundary and affects confidentiality only.

CVSS severity7.7
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient credential protection in Microsoft Azure CycleCloud before 8.9.2 allows remote authenticated users to disclose credentials. Microsoft identifies credential protection as the affected locus but has not published the storage or transmission operation that exposes the credentials. A low-privileged account and network access are required; successful exploitation crosses a security boundary and affects confidentiality only.

The record

CVE
CVE-2026-77909
Published
Sep 8, 2026
Updated
Sep 9, 2026
Vendor
Microsoft
Product
Azure CycleCloud 8.9.2
Classifications
CWE-522
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.9.2 <8.9.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Azure CycleCloud 8.9.2version=8.9.2 <8.9.2

Published CVSS scores

7.7MicrosoftCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

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-522Insufficiently Protected Credentials

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

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Your stack

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