Microsoft has discovered a critical bug in Entra ID. Users do not need to take any action, as the risk has since been mitigated.
Microsoft reports a bug with a maximum CVSS score of 10 in Entra ID. CVE-2026-69836 is labeled as critical and would allow attackers to execute their own code remotely over the network. In line with the high score, the bug was easy for attackers to exploit.
That sounds dramatic, but Microsoft discovered and resolved the zero-day bug itself before criminals were aware of it. The leak has since been plugged. Entra ID users do not need to take any action: mitigation has taken place entirely on Microsoft’s side. There is no evidence of exploitation or further security risk.
Entra ID, formerly known as Azure Active Directory, is the identity and access management platform for both Microsoft 365 and Microsoft’s Azure services.
Small impact, great luck
Microsoft is sharing the CVE even though no measures are required. The software specialist says it is doing so in the name of full transparency.
A bug with this severity score, easy to exploit remotely, has the potential to be dramatic. Especially when the vulnerability occurs with a widely trusted provider. Fortunately, this was a bug that resided exclusively in a Microsoft service and could be patched on Microsoft’s side.
Other scenarios have also occurred. Consider the Log4j bug at the end of 2021. That was in an open-source component used by many software vendors, which meant patching could not be done centrally. It proved impossible to mobilize all parties involved to perform the necessary patches before criminals began to join the fray.