What is CVE-2026-85893?

CVE-2026-85893 is a high-severity vulnerability in Microsoft Edge (Chromium-Based), classified under Use After Free. CVSS score: 8.8/10. Published 2026-09-15.

How severe is CVE-2026-85893?

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

Use After Free in Microsoft Edge (Chromium-Based)

CVE-2026-85893

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.

Vulnerability class: Use-After-Free

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)

Weakness classification (CWE)

CWE-416 — Use After Free

References

Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-85893?: CVE-2026-85893 is a high-severity vulnerability in Microsoft Edge (Chromium-Based), classified under Use After Free. CVSS score: 8.8/10. Published 2026-09-15.
How severe is CVE-2026-85893?: High severity. CVSS v3 base score is 8.8 out of 10.