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Privacy Statement Third-Party Cookies Accept Reject Manage cookies MSRC  Customer Guidance  Security Update Guide  Vulnerabilities  CVE-2026-42830 Azure Monitor Agent Metrics Extension Elevation of Privilege Vulnerability New On this page  CVE-2026-42830  Subscribe RSS PowerShell  API  CSAF Security Vulnerability Released: May 12, 2026 Assigning CNA Microsoft CVE.org link CVE-2026-42830  Impact Elevation of Privilege Max Severity Important Weakness CWE-426: Untrusted Search Path CVSS Source Microsoft Vector String CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C Metrics CVSS:3.1 6.5 / 5.7  Base score metrics: 6.5 / Temporal score metrics: 5.7  Expand all  Collapse all Metric Value   Base score metrics(8) Attack Vector Local Attack Complexity Low Privileges Required Low User Interaction None Scope Changed Confidentiality None Integrity High Availability None   Temporal score metrics(3) Exploit Code Maturity Unproven Remediation Level Official Fix Report Confidence Confirmed Please see Common Vulnerability Scoring System for more information on the definition of these metrics. Executive Summary Untrusted search path in Azure Monitor Agent allows an authorized attacker to elevate privileges locally. Exploitability The following table provides an exploitability assessment for this vulnerability at the time of original publication. Publicly disclosed No Exploited No Exploitability assessment Exploitation Less Likely FAQ According to the CVSS metrics, successful exploitation of this vulnerability could lead to no loss of confidentiality (C:N) and availability (A:N), but could lead to major loss of integrity (I:H). What does that mean for this vulnerability? This primarily impacts integrity, as an attacker could execute unauthorized code and modify system behavior or trusted processes. There is no direct impact to confidentiality, as the scenario does not inherently provide access to sensitive data, and no impact to availability, as exploitation does not inherently disrupt service operation. According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities. What privileges an attacker could gain with a successful exploitation? The OpenSSL configuration auto‑loading behavior allows extension modules (such as MetricsExtension) to load automatically. Therefore, if an attacker was able to place a malicious DLL in a location referenced by the configuration, it could get loaded implicitly, that could result in arbitrary code execution with elevated privileges. Acknowledgements Cristhian Parrot with Kroll https://www.kroll.com/en Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgements for more information. Security Updates To determine the support lifecycle for your software, see the Microsoft Support Lifecycle. Release date Descending  Edit columns  Download  Filters  Product Family  Max Severity  Impact  Platform   Clear Release date  Product Platform Impact Max Severity Article Download Build Number Assigning CNA Customer Action Required Title: Release date, Content: May 12, 2026 Azure Monitor Agent Metrics Extension - Elevation of Privilege Important Title: Knowledge Base Articles for Azure Monitor Agent Metrics Extension, Content:, 1 link Release Notes  Title: Download Security Update for Azure Monitor Agent Metrics Extension, Content:, 1 link Security Update  Title: Build numbers, Content: 1.42.0 Title: Assigning CNA, Content: Microsoft Title: Customer action required, Content: Required All results loaded Loaded all 1 rows Disclaimer The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. Revisions version revisionDate description 1.0 May 12, 2026 Information published.  How satisfied are you with the MSRC Security Update Guide? Rating  Broken  Bad  Below average  Average  Great!  Your Privacy Choices Consumer Health Privacy