MSRC-CVE-2025-49707 — Azure Virtual Machines Spoofing Vulnerability

Summary

Impact: Spoofing. Microsoft rating: Critical. Not known to be exploited — Exploitation Less Likely. Customer action: Not required.

Details

Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.
Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

Vulnerabilities 1

High 7.9

CVE-2025-49707

Azure Virtual Machines Spoofing Vulnerability

Improper access control in Azure Virtual Machines allows an authorized attacker to perform spoofing locally.

Microsoft ECasv5-series Azure VM ECesv5-series Azure VM DCasv5-series Azure VM

Aug 12, 2025

Revision history

2025-08-12 #1
Information published.

References

CVE-2025-49707 Azure Virtual Machines Spoofing Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49707
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss