Microsoft Entra ID improper authentication

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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9.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Entra ID. It has been rated as critical. This vulnerability affects unknown code. The manipulation leads to improper authentication. This vulnerability is documented as CVE-2025-55241. The attack can be initiated remotely. There is not any exploit available. This product is a managed service, indicating that users are not permitted to maintain vulnerability countermeasures themselves.

Detailsinfo

A vulnerability was found in Microsoft Entra ID (version unknown). It has been rated as critical. This issue affects an unknown function. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability.

The advisory is shared at msrc.microsoft.com. The identification of this vulnerability is CVE-2025-55241 since 08/11/2025. The exploitation is known to be difficult. 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 09/19/2025).

The vulnerability is also documented in the databases at EUVD (EUVD-2025-26868) and CERT Bund (WID-SEC-2025-1971). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Microsoft Entra
  • Microsoft Azure

Productinfo

Vendor

Name

License

Managed Service

  • yes

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.2

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 10.0
CNA Vector (microsoft): 🔒

CVSSv2info

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

Exploitinginfo

Class: Improper authentication
CWE: 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

08/11/2025 CVE reserved
09/05/2025 +25 days Advisory disclosed
09/05/2025 +0 days VulDB entry created
09/19/2025 +14 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-55241 (🔒)
GCVE (CVE): GCVE-0-2025-55241
GCVE (VulDB): GCVE-100-322721
EUVD: 🔒
CERT Bund: WID-SEC-2025-1971 - Microsoft Azure: Mehrere Schwachstellen ermöglichen Privilegieneskalation

Entryinfo

Created: 09/05/2025 07:44
Updated: 09/19/2025 05:57
Changes: 09/05/2025 07:44 (60), 09/05/2025 22:41 (7), 09/06/2025 17:50 (1), 09/19/2025 05:57 (13)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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