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CVE-2021-36949

24
FAUCET Score

CVE-2021-36949 is an authentication bypass vulnerability affecting Microsoft Azure Active Directory Connect and its provisioning agent. With a CVSS score of 7.1 (HIGH), this vulnerability allows an attacker on the adjacent network to achieve high confidentiality, integrity, and availability impact with high attack complexity and low privileges. There is currently no public exploit code available, it is not listed in CISA's KEV catalog, and it has garnered limited community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.3.20.0, <= 1.6.11.3CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_active_directory_connect:*:*:*:*:*:*:*:*
>= 2.0.3.0, <= 2.0.9.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_active_directory_connect:*:*:*:*:*:*:*:*
< 1.1.582.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_active_directory_connect_provisioning_agent:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.20%
Probability of exploitation in next 30 days
EPSS Percentile
65.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 86th percentile among its peer group of 45 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Azure Active Directory Connect 1.X.Y.ZFixed in: 1.6.11.3
View patch
microsoftpatch availablevia msrc
Product: Azure Active Directory Connect Provisioning AgentFixed in: 1.1.582.0
View patch
microsoftpatch availablevia msrc
Product: Microsoft Azure Active Directory Connect 2.0.X.YFixed in: 2.0.8.0
View patch

Vendor Advisories (1)

microsoft2021-Aug/CVE-2021-36949Important

Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability

Aug 10, 2021

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2021-36949
PatchVendor Advisory