Microsoft Azure Connected Machine Agent Arc file inclusion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Azure Connected Machine Agent. This vulnerability affects unknown code of the component Arc. The manipulation leads to file inclusion. This vulnerability is referenced as CVE-2025-55316. The attack can only be performed from a local environment. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Microsoft Azure Connected Machine Agent (version now known). It has been rated as critical. This issue affects some unknown processing of the component Arc. The manipulation with an unknown input leads to a file inclusion vulnerability. Using CWE to declare the problem leads to CWE-73. The product allows user input to control or influence paths or file names that are used in filesystem operations. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

External control of file name or path in Azure Arc allows an authorized attacker to elevate privileges locally.

The weakness was published 09/09/2025 as confirmed security update guide (Website). It is possible to read the advisory at msrc.microsoft.com. The identification of this vulnerability is CVE-2025-55316. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/12/2025).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-2004). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Microsoft Entra
  • Microsoft Azure

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔒

CNA Base Score: 7.8
CNA Vector (Microsoft): 🔒

CVSSv2info

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

Exploitinginfo

Class: File inclusion
CWE: CWE-73
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Unproven

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Timelineinfo

09/09/2025 VulDB entry created
09/09/2025 +0 days Advisory disclosed
09/09/2025 +0 days Countermeasure disclosed
09/12/2025 +3 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-55316 (🔒)
GCVE (CVE): GCVE-0-2025-55316
GCVE (VulDB): GCVE-100-323315
CERT Bund: WID-SEC-2025-2004 - Microsoft Azure und Microsoft Entra: Mehrere Schwachstellen

Entryinfo

Created: 09/09/2025 19:49
Updated: 09/12/2025 16:59
Changes: 09/09/2025 19:49 (35), 09/09/2025 19:52 (34), 09/11/2025 09:21 (6), 09/12/2025 16:59 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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