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CVE-2026-57990— Microsoft Edge (Chromium-based) Information Disclosure 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(Chromium-based)是美国Microsoft公司的一款基于Chromium内核的Web浏览器。 Microsoft Edge(Chromium-based)存在权限许可和访问控制问题漏洞，该漏洞源于文件或目录可被外部方访问，可能导致未经授权的攻击者通过网络披露信息。

CVSS 7.4 · High EPSS 0.92% · P59

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Microsoft Edge (Chromium-based) - affected
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I. Basic Information for CVE-2026-57990

Vulnerability Information
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Vulnerability Title
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Files or directories accessible to external parties in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对外部实体的文件或目录可访问
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Edge(Chromium-based) 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Edge(Chromium-based)是美国Microsoft公司的一款基于Chromium内核的Web浏览器。 Microsoft Edge(Chromium-based)存在权限许可和访问控制问题漏洞，该漏洞源于文件或目录可被外部方访问，可能导致未经授权的攻击者通过网络披露信息。
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

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

II. Public POCs for CVE-2026-57990

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III. Intelligence Information for CVE-2026-57990

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Vendor Advisories for CVE-2026-57990 (1)

Same Patch Batch · Microsoft · 2026-07-26 · 3 CVEs total

CVE-2026-57989 7.4 HIGH Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
CVE-2026-57978 5.4 MEDIUM Microsoft Edge (Chromium-based) Spoofing Vulnerability

IV. Related Vulnerabilities

Same product: Microsoft Edge (Chromium-based)
Same vendor: Microsoft
Same weakness: CWE-552

V. Comments for CVE-2026-57990

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