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CVE-2026-70339— Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft Edge (Chromium-based)
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 Edge是美国Microsoft公司的一款Windows10附带的Web浏览器。 Microsoft Edge 151.0.4129.78之前版本存在缓冲区错误漏洞，该漏洞源于访问资源时使用不兼容类型（类型混淆），可能导致未经授权的攻击者通过网络执行代码。

CVSS 5.4 · Medium EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Microsoft Edge (Chromium-based) 1.0.0.0< 151.0.4129.78 affected
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I. Basic Information for CVE-2026-70339

Vulnerability Information
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Vulnerability Title
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不兼容类型访问资源(类型混淆)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Edge 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Edge是美国Microsoft公司的一款Windows10附带的Web浏览器。 Microsoft Edge 151.0.4129.78之前版本存在缓冲区错误漏洞，该漏洞源于访问资源时使用不兼容类型（类型混淆），可能导致未经授权的攻击者通过网络执行代码。
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 Edge (Chromium-based) 1.0.0.0 ~ 151.0.4129.78 -

II. Public POCs for CVE-2026-70339

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III. Intelligence Information for CVE-2026-70339

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Vendor Advisories for CVE-2026-70339 (1)

Same Patch Batch · Microsoft · 2026-08-11 · 402 CVEs total

CVE-2026-59124 9.8 CRITICAL Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability
CVE-2026-62815 9.8 CRITICAL Microsoft QUIC Remote Code Execution Vulnerability
CVE-2026-62878 9.8 CRITICAL Windows DNS Server Remote Code Execution Vulnerability
CVE-2026-62893 9.8 CRITICAL Windows Deployment Services TFTP Server Remote Code Execution Vulnerability
CVE-2026-65791 9.8 CRITICAL Windows iSCSI Target Service Remote Code Execution Vulnerability
CVE-2026-50516 9.4 CRITICAL Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability
CVE-2026-70306 9.3 CRITICAL Microsoft Office SharePoint Spoofing Vulnerability
CVE-2026-70329 8.8 HIGH Microsoft Outlook Remote Code Execution Vulnerability
CVE-2026-70321 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2026-62785 8.8 HIGH Windows LDAP - Lightweight Directory Access Protocol Remote Code Execution Vulnerability
CVE-2026-64901 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-70324 8.8 HIGH Microsoft SharePoint Elevation of Privilege Vulnerability
CVE-2026-66808 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-62822 8.8 HIGH Windows GDI+ Remote Code Execution Vulnerability
CVE-2026-62824 8.8 HIGH Remote Desktop Client Remote Code Execution Vulnerability
CVE-2026-62872 8.8 HIGH .NET Framework Elevation of Privilege Vulnerability
CVE-2026-57104 8.8 HIGH Azure Storage Explorer Elevation of Privilege Vulnerability
CVE-2026-70336 8.8 HIGH Visual Studio Code Remote Code Execution Vulnerability
CVE-2026-62817 8.8 HIGH Windows DNS Server Remote Code Execution Vulnerability
CVE-2026-66805 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability

Showing top 20 of 402 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft Edge (Chromium-based)
Same vendor: Microsoft
Same weakness: CWE-843

V. Comments for CVE-2026-70339

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