CVE-2026-66313

medium

Description

Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66313

Details

Source: Mitre, NVD

Published: 2026-08-04

Updated: 2026-08-06

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00239