CVE Catalog

CVE-2026-23998

High
Published: Translated: NVD NIST

Summary

In Fleet software, prior to version 4.81.0, a vulnerability in the Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances, an attacker could impersonate an enrolled Windows device and retrieve sensitive configuration data.

Risk Assessment

This vulnerability poses a risk of exposing sensitive information, such as Wi-Fi or VPN configuration data, which could lead to further attacks on the organization's infrastructure.

Recommendation

It is recommended to update Fleet software to version 4.81.0 or later to mitigate this vulnerability and implement additional security measures to protect against potential attacks.

Related vulnerabilities

Original NVD description (English source)

Fleet is open source device management software. Prior to version 4.81.0, a vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances, this could allow an attacker to impersonate an enrolled Windows device and retrieve sensitive configuration data. Fleet’s Windows MDM management endpoint relies on mutual TLS (mTLS) client certificates to authenticate enrolled devices. In affected versions, requests that did not present a client certificate could be incorrectly treated as trusted. As a result, an attacker with prior knowledge of a valid enrolled device identifier could potentially impersonate that device and receive configuration payloads intended for it. These payloads may contain sensitive information such as Wi-Fi or VPN configuration data, certificates, or other secrets delivered through MDM profiles. This issue does not allow enrollment of new devices, administrative access to

Vulnerability data from NVD (NIST) · CISA KEV · EPSS