Quick answers
- Is CVE-2026-69836 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69836 being exploited in the wild.
- How severe is CVE-2026-69836?
- Critical severity, with a CVSS score of 10, published 20 August 2026.
- Which products and versions are affected?
- Microsoft Entra ID.
- Is there a fix for CVE-2026-69836?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-69836 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-69836?
- Check whether you run Microsoft Entra ID. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a deserialization-of-untrusted-data flaw in Microsoft Entra ID that permits remote code execution (RCE) without requiring prior authentication. The attacker can send a specially crafted network request containing malicious serialized objects to the affected service, which deserializes the data without proper validation. This allows arbitrary code execution in the context of the Entra ID service. The attack vector is network-based and no user interaction or authentication is required, making it highly exploitable. Patches are expected to be released via Microsoft Security Update Guide.
Affected products
- Microsoft Entra ID
Timeline
- 2026-08-20: disclosed