CVE-2025-62222
Published: 11 November 2025
Summary
CVE-2025-62222 is a high-severity Improper Input Validation (CWE-20) vulnerability in Microsoft Github Copilot Chat. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 29.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly addresses the CVE by requiring timely identification, reporting, and correction of the command injection flaw through patching the Visual Studio Code CoPilot Chat Extension.
Prevents command injection exploitation by enforcing proper information input validation and sanitization at entry points in the chat extension's command processing.
Mitigates risk by restricting or approving user-installed software like the vulnerable CoPilot Chat Extension, preventing its deployment on systems.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The vulnerability is a command injection (CWE-77) in a VS Code extension enabling remote arbitrary command execution with user interaction, directly mapping to T1203 (Exploitation for Client Execution) via the client-side vuln and T1059 (Command and Scripting Interpreter) for the resulting OS command execution.
NVD Description
Improper neutralization of special elements used in a command ('command injection') in Visual Studio Code CoPilot Chat Extension allows an unauthorized attacker to execute code over a network.
Deeper analysisAI
CVE-2025-62222 is a command injection vulnerability stemming from improper neutralization of special elements used in a command, classified under CWE-20 and CWE-77. It affects the Visual Studio Code CoPilot Chat Extension, enabling an unauthorized attacker to execute arbitrary code over a network. The vulnerability received a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), indicating high severity due to its potential for significant impact on confidentiality, integrity, and availability.
An attacker can exploit this vulnerability remotely with low complexity and no required privileges, but it necessitates user interaction, such as clicking a malicious link or engaging with crafted content in the extension's chat interface. Successful exploitation allows the attacker to execute arbitrary commands on the victim's machine, potentially leading to full system compromise, data theft, or further lateral movement within the environment.
For mitigation details, including patches and workarounds, refer to the official advisory from Microsoft Security Response Center at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62222. The vulnerability was published on 2025-11-11T18:15:49.887.
Details
- CWE(s)