Top 10 actions to build agents securely with Microsoft Copilot Studio

Organizations are rapidly adopting Copilot Studio agents, but threat actors are equally fast at exploiting misconfigured AI workflows. Mis-sharing, unsafe orchestration, and weak authentication create new identity and data‑access paths that traditional controls don’t monitor. As AI agents become...

CVE-2026-21518

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network...

CVE-2026-21257

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network...

CVE-2026-21516

Improper neutralization of special elements used in a command 'command injection' in Github Copilot allows an unauthorized attacker to execute code over a network...

CVE-2026-21256

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an unauthorized attacker to execute code over a network...

GitHub Copilot for JetBrains < 1.5.63 Remote Code Execution (February 2026)

The GitHub Copilot for JetBrains plugin installed on the remote host is prior to version 1.5.63. It is, therefore, affected by a remote code execution vulnerability: - Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot allows an unauthorized attack...

Vulnerabilities fixed in Microsoft Developer Tools

Microsoft has fixed vulnerabilities in several Visual Studio and .NET components. A malicious party could exploit the vulnerabilities to bypass security measures, grant themselves elevated privileges and potentially execute arbitrary code with the victim's privileges. For successful abuse, the...

CVE-2026-21518

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network...

CVE-2026-21523

Time-of-check time-of-use toctou race condition in GitHub Copilot and Visual Studio allows an authorized attacker to execute code over a network...

CVE-2026-21518

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network...

CVE-2026-21523

Time-of-check time-of-use toctou race condition in GitHub Copilot and Visual Studio allows an authorized attacker to execute code over a network...

CVE-2026-21516

Improper neutralization of special elements used in a command 'command injection' in Github Copilot allows an unauthorized attacker to execute code over a network...

CVE-2026-21516

Improper neutralization of special elements used in a command 'command injection' in Github Copilot allows an unauthorized attacker to execute code over a network...

CVE-2026-21256

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an unauthorized attacker to execute code over a network...

CVE-2026-21257

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network...

CVE-2026-21256

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an unauthorized attacker to execute code over a network...

CVE-2026-21257

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network...

CVE-2026-21256 GitHub Copilot and Visual Studio Remote Code Execution Vulnerability

...

CVE-2026-21256

Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an unauthorized attacker to execute code over a network...

CVE-2026-21256 GitHub Copilot and Visual Studio Remote Code Execution Vulnerability

...