CVE-2026-42901
Microsoft Entra ID Elevation of Privilege Vulnerability
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Entra ID Elevation of Privilege Vulnerability
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
- Record
CVE-2026-42901- CVSS 3.1
- 10.0 Critical
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 - Weakness
- CWE-346
- Updated
- 2026-11-02
EUVDEUVD-2026-31522
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
- Record
EUVD-2026-31522- CVSS 3.1
- 10.0 Critical
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2jpj-7p7q-hfqj
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate...
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
- Record
GHSA-2jpj-7p7q-hfqj- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-346
- Updated
- 2026-11-02
NVD
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
- Record
CVE-2026-42901- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-346
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-42901 is a critical vulnerability (CVSS 10.0) in Microsoft Entra Id, published May 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 22nd percentile. No source names a fixed version.