CVE-2026-21257— GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Microsoft Visual Studio 2022 version 17.14
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft GitHub Copilot and Visual Studio是美国微软（Microsoft）公司的一种生成式 AI 工具。 Microsoft GitHub Copilot and Visual Studio存在命令注入漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Microsoft Visual Studio 2022 version 17.14,Microsoft Visual Studio 2022 version 18.3。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0< 17.14.26 |
affected |
| Microsoft | Microsoft Visual Studio 2026 version 18.3 | 18.3.0< 18.3.0 |
affected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-21257
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft GitHub Copilot and Visual Studio 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft GitHub Copilot and Visual Studio是美国微软（Microsoft）公司的一种生成式 AI 工具。 Microsoft GitHub Copilot and Visual Studio存在命令注入漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Microsoft Visual Studio 2022 version 17.14,Microsoft Visual Studio 2022 version 18.3。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 ~ 17.14.26 | - |
|
| Microsoft | Microsoft Visual Studio 2026 version 18.3 | 18.3.0 ~ 18.3.0 | - |
|
II. Public POCs for CVE-2026-21257
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-21257
请登录查看更多情报信息。
Same Patch Batch · Microsoft · 2026-02-10 · 54 CVEs total
| CVE-2026-21531 | 9.8 CRITICAL | Azure SDK for Python Remote Code Execution Vulnerability |
| CVE-2026-21537 | 8.8 HIGH | Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability |
| CVE-2026-21510 | 8.8 HIGH | Windows Shell Security Feature Bypass Vulnerability |
| CVE-2026-21255 | 8.8 HIGH | Windows Hyper-V Security Feature Bypass Vulnerability |
| CVE-2026-21518 | 8.8 HIGH | GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability |
| CVE-2026-21513 | 8.8 HIGH | MSHTML Framework Security Feature Bypass Vulnerability |
| CVE-2026-21516 | 8.8 HIGH | GitHub Copilot for Jetbrains Remote Code Execution Vulnerability |
| CVE-2026-21256 | 8.8 HIGH | GitHub Copilot and Visual Studio Remote Code Execution Vulnerability |
| CVE-2026-21228 | 8.1 HIGH | Azure Local Remote Code Execution Vulnerability |
| CVE-2026-21229 | 8.0 HIGH | Power BI Remote Code Execution Vulnerability |
| CVE-2026-21523 | 8.0 HIGH | GitHub Copilot and Visual Studio Code Remote Code Execution Vulnerability |
| CVE-2026-21236 | 7.8 HIGH | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability |
| CVE-2026-21533 | 7.8 HIGH | Windows Remote Desktop Services Elevation of Privilege Vulnerability |
| CVE-2026-21514 | 7.8 HIGH | Microsoft Word Security Feature Bypass Vulnerability |
| CVE-2026-21251 | 7.8 HIGH | Cluster Client Failover (CCF) Elevation of Privilege Vulnerability |
| CVE-2026-21232 | 7.8 HIGH | Windows HTTP.sys Elevation of Privilege Vulnerability |
| CVE-2026-21239 | 7.8 HIGH | Windows Kernel Elevation of Privilege Vulnerability |
| CVE-2026-21238 | 7.8 HIGH | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability |
| CVE-2026-21231 | 7.8 HIGH | Windows Kernel Elevation of Privilege Vulnerability |
| CVE-2026-21259 | 7.8 HIGH | Microsoft Excel Elevation of Privilege Vulnerability |
Showing top 20 of 54 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Microsoft Visual Studio 2022 version 17.14
Same vendor: Microsoft
-
CVE-2026-100208
Microsoft Office Outlook Remote Code Execution Vulnerability -
CVE-2026-70125
Microsoft Office Outlook Remote Code Execution Vulnerability -
CVE-2026-88097
Microsoft Edge (Chromium-based) Elevation of Privilege Vulne -
CVE-2026-85887
M365 Copilot Information Disclosure Vulnerability -
CVE-2026-83946
Azure Portal Spoofing Vulnerability
Same weakness: CWE-77
-
CVE-2026-102133
Kiteworks Core Arbitrary File Write through Command Injectio -
CVE-2026-102794
Ziroom ZHOME A0101 ping command injection -
CVE-2026-102793
Ziroom ZHOME A0101 set_time_zone command injection -
CVE-2026-102792
Ziroom ZHOME A0101 set_syslog command injection -
CVE-2026-102827
simple-git: unsafe-operations plugin bypass via git long-opt
V. Comments for CVE-2026-21257
No comments yet