CVE-2026-45480: Azure Active Directory Elevation of Privilege Vulnerability
CVE-2026-45480 is an elevation of privilege vulnerability in Azure Active Directory, rated Critical by Microsoft, with a CVSS 3.1 base score of 10 (Critical). An attacker can exploit it remotely over the network, without any privileges and without user interaction. Microsoft has not reported exploitation in the wild. The EPSS model estimates a 0.90% probability of exploitation activity in the next 30 days, higher than 60% of all scored vulnerabilities. Microsoft published it on 18 June 2026, outside Patch Tuesday. It affects 1 product in 1 product family (Azure).
Key facts
- CVE ID
- CVE-2026-45480
- Severity
- Critical CVSS 10
- Microsoft severity
- Critical
- Impact
- Elevation of Privilege
- Exploited in the wild
- No
- Publicly disclosed
- No
- Weakness
- CWE-287
- EPSS
- 0.90% (percentile 60%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- June 2026 Patch Tuesday
- Product families
- Azure
CVSS score and vector
Microsoft scores CVE-2026-45480 at 10 (temporal 8.7) using CVSS 3.1. 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
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality impact | High |
| Integrity impact | High |
| Availability impact | High |
| Exploit code maturity | Unproven |
| Remediation level | Official fix |
| Report confidence | Confirmed |
Description
Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
Frequently asked questions (Microsoft)
Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.
Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.
Affected products (1)
Azure
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Azure Active Directory |
NIST NVD data
- NVD status
- Analyzed
- NVD CVSS
- 10 (CRITICAL)
- NVD weakness
- CWE-287
- Published to NVD
- NVD last modified
Affected configurations (CPE)
| Product | Vulnerable versions |
|---|---|
| azure active directory | all listed versions |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45480 (Vendor Advisory)
Acknowledgments
- Microsoft Red Team
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. |