CVE-2024-29054 Overview
CVE-2024-29054 is an elevation of privilege vulnerability affecting Microsoft Defender for IoT. The flaw allows an authenticated attacker with high privileges to escalate their access on affected systems, resulting in full compromise of confidentiality, integrity, and availability. Microsoft published the advisory on April 9, 2024, and the vulnerability is categorized under CWE-284 (Improper Access Control). While no public exploit code has been observed and the issue is not listed in the CISA Known Exploited Vulnerabilities catalog, the EPSS score of 2.291% places it in the 81st percentile of vulnerabilities most likely to be exploited.
Critical Impact
Successful exploitation grants attackers elevated privileges on Microsoft Defender for IoT deployments, enabling full control over the security monitoring platform protecting operational technology environments.
Affected Products
- Microsoft Defender for IoT (all versions prior to the April 2024 security update)
- Microsoft Defender for IoT management console
- Microsoft Defender for IoT sensor components
Discovery Timeline
- 2024-04-09 - CVE-2024-29054 published to NVD and Microsoft advisory released
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-29054
Vulnerability Analysis
CVE-2024-29054 is an improper access control weakness [CWE-284] in Microsoft Defender for IoT, the agentless security monitoring platform for operational technology (OT) and Internet of Things (IoT) networks. The vulnerability enables an authenticated attacker holding high privileges to elevate their access further, gaining broader control than intended by the platform's authorization model.
Exploitation occurs over the network and requires no user interaction. Successful attacks yield high impact across confidentiality, integrity, and availability. Because Defender for IoT typically monitors industrial control systems, healthcare devices, and building automation, compromise of the platform itself undermines visibility into the environments it protects. Microsoft has not publicly released detailed technical mechanics of the flaw beyond its classification.
Root Cause
The root cause is improper access control within Defender for IoT, mapped to [CWE-284]. Access decisions within one or more privileged functions do not correctly enforce the boundary between authorized privilege levels. An authenticated actor with legitimate access can invoke functionality reserved for higher-privileged roles.
Attack Vector
The attack is executed remotely over the network against a Defender for IoT component. The attacker must first authenticate with high privileges before triggering the elevation, meaning the vulnerability is most useful as a post-authentication escalation primitive. Refer to the Microsoft Security Response Center advisory for the full technical description and version applicability.
Detection Methods for CVE-2024-29054
Indicators of Compromise
- Unexpected administrative role changes or new high-privilege accounts on Defender for IoT sensors or the management console
- Authenticated sessions performing configuration changes outside of documented maintenance windows
- Anomalous API calls to Defender for IoT management endpoints from accounts without a history of administrative activity
Detection Strategies
- Audit Defender for IoT role assignments and compare against a known-good baseline of authorized administrators
- Review authentication logs for accounts that pivot from standard access to privileged operations within a short window
- Correlate management console activity with source IP addresses and workstation identities to surface unauthorized access paths
Monitoring Recommendations
- Forward Defender for IoT audit logs to a centralized SIEM for retention and correlation with identity telemetry
- Alert on privilege modifications, sensor configuration changes, and access to sensitive OT asset inventories
- Monitor for outbound connections from Defender for IoT components to non-Microsoft infrastructure
How to Mitigate CVE-2024-29054
Immediate Actions Required
- Apply the security update referenced in the Microsoft CVE-2024-29054 advisory to all Defender for IoT sensors and management consoles
- Review and reduce the number of accounts holding high-privilege roles within Defender for IoT
- Rotate credentials for privileged Defender for IoT accounts after patching, particularly if compromise is suspected
Patch Information
Microsoft addressed CVE-2024-29054 in the April 2024 security update cycle. Administrators should consult the Microsoft Security Response Center advisory for the specific fixed versions applicable to their sensor and management console deployments, and follow Microsoft's documented upgrade procedure for Defender for IoT components.
Workarounds
- Restrict network access to Defender for IoT management interfaces using firewall rules and jump hosts until patching completes
- Enforce multi-factor authentication on all Defender for IoT administrative accounts to raise the bar for pre-conditions of exploitation
- Segment Defender for IoT infrastructure from general corporate networks and limit administrative access to a defined set of workstations
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
