Microsoft Entra Active Directory authentication bypass

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Entra. This affects an unknown function of the component Active Directory Handler. The manipulation leads to authentication bypass. This vulnerability is referenced as CVE-2026-33843. Remote exploitation of the attack is possible. No exploit is available. This product is available as a managed service. Users are not able to maintain vulnerability countermeasures themselves.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Entra (the affected version is unknown). This issue affects an unknown code of the component Active Directory Handler. The manipulation with an unknown input leads to a authentication bypass vulnerability. Using CWE to declare the problem leads to CWE-288. A product requires authentication, but the product has an alternate path or channel that does not require authentication. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.

The advisory is shared at msrc.microsoft.com. The identification of this vulnerability is CVE-2026-33843 since 03/24/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/24/2026).

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1649). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Microsoft Azure
  • Microsoft Azure Stack

Productinfo

Vendor

Name

License

Managed Service

  • yes

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.1
CNA Vector (microsoft): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication bypass
CWE: CWE-288 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/24/2026 CVE reserved
05/23/2026 +59 days Advisory disclosed
05/23/2026 +0 days VulDB entry created
05/24/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-33843 (🔒)
GCVE (CVE): GCVE-0-2026-33843
GCVE (VulDB): GCVE-100-365285
CERT Bund: WID-SEC-2026-1649 - Microsoft Azure: Mehrere Schwachstellen

Entryinfo

Created: 05/23/2026 07:53
Updated: 05/24/2026 06:02
Changes: 05/23/2026 07:53 (62), 05/24/2026 06:02 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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