CVE-2026-24305
Published: 22 January 2026
Summary
CVE-2026-24305 is a critical-severity Improper Authorization (CWE-285) vulnerability in Microsoft Entra Id. Its CVSS base score is 9.3 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 21.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and AC-6 (Least Privilege).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Enforces approved authorizations for access to resources, directly countering the improper authorization (CWE-285) that enables unauthenticated privilege elevation in Azure Entra ID.
Applies least privilege to restrict the scope and impact of any successful privilege escalation within the Azure Entra ID environment.
Requires timely identification, reporting, and remediation of flaws like CVE-2026-24305 through patching as advised by Microsoft's Security Response Center.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct EoP vulnerability in public-facing Azure Entra ID service enables unauthenticated network exploitation for privilege escalation.
NVD Description
Azure Entra ID Elevation of Privilege Vulnerability
Deeper analysisAI
CVE-2026-24305 is an Elevation of Privilege vulnerability in Azure Entra ID. It carries a CVSS v3.1 base score of 9.3 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N) and is linked to CWE-285 (Improper Authorization).
The vulnerability can be exploited by an unauthenticated attacker over the network with low attack complexity and no user interaction required. Successful exploitation enables high-impact confidentiality disclosure, low-impact integrity modification, and a scope change to high, allowing the attacker to elevate privileges within the affected Azure Entra ID environment.
Microsoft's Security Response Center advisory provides details on mitigation and patching at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24305.
Details
- CWE(s)