Microsoft Azure Network Watcher VM Extension link following

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Microsoft Azure Network Watcher VM Extension. This issue affects some unknown processing. Executing a manipulation can lead to link following. This vulnerability appears as CVE-2025-21188. The attack requires local access. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Azure Network Watcher VM Extension (version unknown). It has been declared as problematic. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect integrity, and availability. CVE summarizes:

Azure Network Watcher VM Extension Elevation of Privilege Vulnerability

The weakness was presented 02/11/2025 as confirmed security update guide (Website). The advisory is shared for download at msrc.microsoft.com. This vulnerability was named CVE-2025-21188. The exploitation appears to be easy. The attack needs to be approached locally. Additional levels of successful authentication are necessary for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 216124 (Microsoft Azure Network Watcher VM Extension < 1.4.3563.1 Elevation of Privilege (CVE-2025-21188)), which helps to determine the existence of the flaw in a target environment.

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 Tenable (216124). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.4
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 6.0
Vendor Vector (Microsoft): 🔍

CNA Base Score: 6.0
CNA Vector (Microsoft): 🔍

CVSSv2info

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

Exploitinginfo

Class: Link following
CWE: CWE-59
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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Nessus ID: 216124
Nessus Name: Microsoft Azure Network Watcher VM Extension < 1.4.3563.1 Elevation of Privilege (CVE-2025-21188)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/11/2025 🔍
02/11/2025 +0 days 🔍
02/11/2025 +0 days 🔍
02/28/2025 +17 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-21188 (🔍)
GCVE (CVE): GCVE-0-2025-21188
GCVE (VulDB): GCVE-100-295288

Entryinfo

Created: 02/11/2025 19:11
Updated: 02/28/2025 19:12
Changes: 02/11/2025 19:11 (33), 02/11/2025 19:14 (37), 02/12/2025 06:07 (2), 02/28/2025 19:12 (13)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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