What is CVE-2026-66310?

CVE-2026-66310 is a high-severity vulnerability in Microsoft Edge For Android, classified under External Control of File Name or Path. CVSS score: 7.7/10. Published 2026-08-04.

How severe is CVE-2026-66310?

High severity. CVSS v3 base score is 7.7 out of 10.

Vulnerability in Microsoft Edge For Android

CVE-2026-66310

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

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Microsoft Edge For Android — versions 1.0.0

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-66310?: CVE-2026-66310 is a high-severity vulnerability in Microsoft Edge For Android, classified under External Control of File Name or Path. CVSS score: 7.7/10. Published 2026-08-04.
How severe is CVE-2026-66310?: High severity. CVSS v3 base score is 7.7 out of 10.