CVE-2026-65816Network attack vector

Unauthenticated privilege escalation via incorrectly resolved reference

Published Aug 20, 2026 · Updated Aug 29, 2026

Incorrect reference resolution in Microsoft Azure Web Apps allows remote attackers to elevate privileges over a network. Microsoft has not disclosed the component or resolution operation, and its description names Azure Arc while its affected-product data lists Azure Web Apps. No authentication or user interaction is required; exploitation grants privileges beyond the attacker’s authorization, but the affected resources and permitted actions are undisclosed.

CVSS severity10.0
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect reference resolution in Microsoft Azure Web Apps allows remote attackers to elevate privileges over a network. Microsoft has not disclosed the component or resolution operation, and its description names Azure Arc while its affected-product data lists Azure Web Apps. No authentication or user interaction is required; exploitation grants privileges beyond the attacker’s authorization, but the affected resources and permitted actions are undisclosed.

The record

CVE
CVE-2026-65816
Published
Aug 20, 2026
Updated
Aug 29, 2026
Vendor
Microsoft
Product
Azure Web Apps
Classifications
CWE-706, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Azure Web Appsversion=-

Published CVSS scores

10.0MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-706Use of Incorrectly-Resolved Name or Reference
T1068Exploitation for Privilege Escalation

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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