CVE-2021-36949
Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability
Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- Low
- 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 Azure Active Directory Connect Authentication Bypass Vulnerability
Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability
- Record
CVE-2021-36949- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-23525
Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability
- Record
EUVD-2021-23525- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-55wf-38cw-5f72
Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability
Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability
- Record
GHSA-55wf-38cw-5f72- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
NVD
Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability
- Record
CVE-2021-36949- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.9 Medium
AV:A/AC:M/Au:S/C:P/I:P/A:P - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Maxwitat/Check-AAD-Connect-for-CVE-2021-36949-vulnerability | 2021-08-14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-36949 is a high vulnerability (CVSS 7.1) in Microsoft Azure Active Directory Connect, published August 12, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.40%, the 72nd percentile. No source names a fixed version.