Cyber Resilience

CVE-2026-24305

Critical

Published: 22 January 2026

Published
22 January 2026
Modified
03 February 2026
KEV Added
—
Patch
—
CVSS Score v3.1 9.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
EPSS Score 0.0050 38.7th percentile
Risk Priority 70 floored blend · peak EPSS

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 38.7th 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).

Deeper analysis

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.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability details

Azure Entra ID Elevation of Privilege Vulnerability

CWE(s)
CWE-285

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Direct EoP vulnerability in public-facing Azure Entra ID service enables unauthenticated network exploitation for privilege escalation.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-59246Same product: Microsoft Entra Id
CVE-2026-35431Same product: Microsoft Entra Id
CVE-2025-55241Same product: Microsoft Entra Id
CVE-2026-40379Same product: Microsoft Entra Id
CVE-2025-26683Same vendor: Microsoft
CVE-2025-64655Same vendor: Microsoft
CVE-2025-53792Same vendor: Microsoft
CVE-2025-24053Same vendor: Microsoft
CVE-2025-21348Same vendor: Microsoft
CVE-2026-27912Same vendor: Microsoft

Affected Assets

microsoft
entra id
all versions

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match
prevent

Enforces approved authorizations for access to resources, directly countering the improper authorization (CWE-285) that enables unauthenticated privilege elevation in Azure Entra ID.

AC-6 Least Privilege good match
prevent

Applies least privilege to restrict the scope and impact of any successful privilege escalation within the Azure Entra ID environment.

SI-2 Flaw Remediation good match
prevent

Requires timely identification, reporting, and remediation of flaws like CVE-2026-24305 through patching as advised by Microsoft's Security Response Center.

References