What is CVE-2026-57983?

CVE-2026-57983 is a high-severity vulnerability in Microsoft Edge (Chromium-based), classified under Improper Authorization. CVSS score: 8.7/10. Published 2026-07-03.

How severe is CVE-2026-57983?

High severity. CVSS v3 base score is 8.7 out of 10.

Auth bypass in Microsoft Edge (Chromium-based)

CVE-2026-57983

Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N.

Affected products

Microsoft Edge (Chromium-based) — versions 1.0.0.0

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

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

Frequently asked questions

What is CVE-2026-57983?: CVE-2026-57983 is a high-severity vulnerability in Microsoft Edge (Chromium-based), classified under Improper Authorization. CVSS score: 8.7/10. Published 2026-07-03.
How severe is CVE-2026-57983?: High severity. CVSS v3 base score is 8.7 out of 10.