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February 24, 2026—KB5077239 (OS Build 28000.1643) Preview
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ThreatsDay Bulletin: OpenSSL RCE, Foxit 0-Days, Copilot Leak, AI Password Flaws & 20+ Stories
The cyber threat space doesn’t pause, and this week makes that clear. New risks, new tactics, and new security gaps are showing up across platforms, tools, and industries — often all at the same time. Some developments are headline-level. Others sit in the background but carry long-term impact...
Researchers Show Copilot and Grok Can Be Abused as Malware C2 Proxies
Cybersecurity researchers have disclosed that artificial intelligence AI assistants that support web browsing or URL fetching capabilities can be turned into stealthy command-and-control C2 relays, a technique that could allow attackers to blend into legitimate enterprise communications and evade...
Qualys Recognized as a Leader in the 2026 Forrester Wave™ for CNAPP
Qualys’ Key Takeaways Qualys Named a Leader: Recognized as one of only three leaders in The Forrester Wave: Cloud-Native Application Protection Solutions CNAPP, Q1 2026. Unified Platform: “Qualys has been actively expanding its platform to cover CSPM, CIEM, and even SaaS security posture manageme...
Security Updates for Microsoft Visual Studio Products (February 2026)
The Microsoft Visual Studio Products are missing security updates. They are, therefore, affected by multiple vulnerabilities, including: - Improper neutralization of special elements used in a command 'command injection' in GitHub Copilot and Visual Studio allows an unauthorized attacker to execu...
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...
The vulnerability of GitHub Copilot for Jetbrains, related to the lack of data cleaning at the management level, allows a hacker to execute arbitrary code.
The vulnerability of GitHub Copilot for Jetbrains relates to the lack of measures taken to protect data at the management level. Exploiting this vulnerability could allow a malicious actor to execute arbitrary code remotely...
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-2026-21523
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-2026-21523
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-2026-21518
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-2026-21516
Improper neutralization of special elements used in a command 'command injection' in Github Copilot allows an unauthorized attacker to execute code over a network...