What is CVE-2026-57974?

CVE-2026-57974 is a high-severity vulnerability in Microsoft Edge (Chromium-based), classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-07-03.

How severe is CVE-2026-57974?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Microsoft Edge (Chromium-based)

CVE-2026-57974

Integer overflow or wraparound in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Edge (Chromium-based) — versions 1.0.0.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

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

Frequently asked questions

What is CVE-2026-57974?: CVE-2026-57974 is a high-severity vulnerability in Microsoft Edge (Chromium-based), classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-07-03.
How severe is CVE-2026-57974?: High severity. CVSS v3 base score is 8.8 out of 10.