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Privacy Statement Third-Party Cookies AcceptRejectManage cookies MSRC  Customer Guidance  Security Update Guide  Vulnerabilities  CVE-2026-48561 Microsoft Copilot Remote Code Execution Vulnerability New On this page  CVE-2026-48561  Subscribe RSS PowerShell  API  CSAF Security Vulnerability Released: Jul 14, 2026 Assigning CNA Microsoft CVE.org link CVE-2026-48561  Impact Remote Code Execution Max Severity Critical Weakness CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') CVSS Source Microsoft Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C Metrics CVSS:3.1 9.6 / 8.3  Base score metrics: 9.6 / Temporal score metrics: 8.3  Expand all  Collapse all Metric Value   Base score metrics(8) Attack Vector Network Attack Complexity Low Privileges Required None User Interaction Required Scope Changed Confidentiality High Integrity High Availability High   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 Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to execute code over a network. 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 metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In this case, a successful attack could be performed from a low privilege Hyper-V guest. The attacker could traverse the guest's security boundary to execute code on the Hyper-V host execution environment. How could an attacker exploit this vulnerability? An attacker could host a malicious website that causes Microsoft Edge for Android to automatically send crafted prompts to Copilot on a user’s device when the user visits the site. Because the affected component processes these requests without confirmation or origin checks, the prompts may be executed without the user’s awareness, potentially resulting in unintended actions within Copilot such as accessing or modifying data. Acknowledgements Ofek Levin Enclave with Enclave https://enclave.ai/ 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 Title: Release date, Content: Jul 14, 2026 Microsoft 365 Copilot for iOS - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft 365 Copilot for iOS, Content:, 1 link Release Notes  Title: Download Security Update for Microsoft 365 Copilot for iOS, Content:, 1 link Security Update  Title: Build numbers, Content: - Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Jul 14, 2026 Microsoft 365 Copilot for Android - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft 365 Copilot for Android, Content:, 1 link Release Notes  Title: Download Security Update for Microsoft 365 Copilot for Android, Content:, 1 link Security Update  Title: Build numbers, Content: - Title: Assigning CNA, Content: Microsoft All results loaded Loaded all 2 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 Jul 14, 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 Privacy & Cookies