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CVE-2026-55945— Microsoft Edge (Chromium-based) Information Disclosure Vulnerability

CVSS 4.2 · Medium EPSS 0.14% · P4

Possible ATT&CK Techniques 1AI

T1207 · Rogue Domain Controller

Affected Version Matrix 1

VendorProductVersion RangeStatus
MicrosoftMicrosoft Edge (Chromium-based)1.0.0.0< 150.0.4078.48affected
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I. Basic Information for CVE-2026-55945

Vulnerability Information
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Vulnerability Title
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to disclose information locally.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Edge 竞争条件问题漏洞
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 150.0.4078.48之前版本存在竞争条件问题漏洞，该漏洞源于共享资源并发执行时同步不当（竞争条件），可能导致授权攻击者在本地泄露信息。
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

VendorProductAffected VersionsCPESubscribe
MicrosoftMicrosoft Edge (Chromium-based) 1.0.0.0 ~ 150.0.4078.48 -

II. Public POCs for CVE-2026-55945

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III. Intelligence Information for CVE-2026-55945

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Vendor Advisories for CVE-2026-55945 (1)

Same Patch Batch · Microsoft · 2026-07-03 · 43 CVEs total

CVE-2026-582899.0 CRITICALMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-579818.8 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-579748.8 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-566458.8 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-579838.7 HIGHMicrosoft Edge (Chromium-based) Security Feature Bypass Vulnerability
CVE-2026-582888.3 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-582848.3 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-582878.3 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-582958.3 HIGHMicrosoft Edge (Chromium-based) Security Feature Bypass Vulnerability
CVE-2026-582858.3 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-582838.1 HIGHMicrosoft Edge (Chromium-based) Spoofing Vulnerability
CVE-2026-582868.1 HIGHMicrosoft Edge (Chromium-based) Spoofing Vulnerability
CVE-2026-582938.1 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-582828.1 HIGHMicrosoft Edge (Chromium-based) Spoofing Vulnerability
CVE-2026-579857.6 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-579867.5 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-579927.5 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-579847.5 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-579757.5 HIGHMicrosoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-582997.5 HIGHMicrosoft Edge for Android Remote Code Execution Vulnerability

Showing top 20 of 43 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft Edge (Chromium-based)
Same vendor: Microsoft
Same weakness: CWE-362

V. Comments for CVE-2026-55945

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