CVE-2026-88090— Microsoft Edge (Chromium-based) Elevation of Privilege 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（基于 Chromium）中存在因使用不兼容类型访问资源（类型混淆）的漏洞，允许未授权的攻击者通过网络提升权限。

CVSS 5.4 · Medium Updated Oct 29, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Microsoft Edge (Chromium-based) Elevation of Privilege 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 elevate privileges 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

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Microsoft	Microsoft Edge (Chromium-based)	1.0.0.0 ~ 154.0.4258.37	-

II. Public POCs for CVE-2026-88090

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-88090

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Other References for CVE-2026-88090 (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88090 vendor-advisory patch

https://www.cve.org/CVERecord?id=CVE-2026-88090

Same Patch Batch · Microsoft · 2026-10-29 · 15 CVEs total

CVE-2026-88077	8.8 HIGH	Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
CVE-2026-96196	8.8 HIGH	Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
CVE-2026-96203	8.8 HIGH	Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
CVE-2026-96192	8.8 HIGH	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-96199	8.8 HIGH	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-96198	8.8 HIGH	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-85890	8.8 HIGH	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-85897	8.8 HIGH	Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-85899	8.1 HIGH	Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
CVE-2026-114148	7.8 HIGH	ASP.NET Core Elevation of Privilege Vulnerability
CVE-2026-96187	7.4 HIGH	Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
CVE-2026-88078	4.3 MEDIUM	Microsoft Edge (Chromium-based) Spoofing Vulnerability
CVE-2026-85330	4.3 MEDIUM	Microsoft Edge for Android Security Feature Bypass Vulnerability
CVE-2026-20942	4.3 MEDIUM	Microsoft Edge (Chromium-based) Spoofing Vulnerability

IV. Related Vulnerabilities

Same product: Microsoft Edge (Chromium-based)

Same vendor: Microsoft

Same weakness: CWE-843