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Microsoft Edge's External Control of a File Path Flaw Allows Attackers to Read or Write Files Outside the Intended Browsing Sandbox via a Crafted Page

Last refreshed2026-09-27

Status: UPDATED  |  Advisory ID: CVE-2026-65802

Key Details

CVECVE-2026-65802
CVSS Score / Version7.4 (High) / CVSS v3.1
Updated2026-09-20
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CVSS Proseattack vector is network; attack complexity is low; privileges required is none; user interaction is required; scope is changed; confidentiality impact is high; integrity impact is none; availability impact is none.
Affected productsMicrosoft Edge (Chromium-based)
Classified asCWE-73 (External Control of File Name or Path)
Exploitation prediction (EPSS)0.92% probability of exploitation in the next 30 days (59% percentile) -- FIRST.org's EPSS model.

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
MicrosoftEdge (Chromium-based)
SubsystemsGeneral OT
SectorsMultiple

What to Know

External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclose information over a network.

What to Do

Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-65802
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-65802
Vendor advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65802