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Microsoft Security Response CenterCVE-2026-66317

Microsoft Edge (Chromium-based) Tampering Vulnerability

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

Read the vendor bulletin Get alerts for Microsoft Edge (Chromium-based)
5.4CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft Edge (Chromium-based)

Versions the vendor lists as fixed

  • 151.0.4129.59
Next step

What the vendor recommends

Release Notes

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-66317View CVSS, KEV, EPSS, and threat context
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