What is CVE-2026-57988?

CVE-2026-57988 is a high-severity vulnerability in Microsoft Edge Chromium, classified under Relative Path Traversal. CVSS score: 7.1/10. Published 2026-07-03.

How severe is CVE-2026-57988?

High severity. CVSS v3 base score is 7.1 out of 10.

Path Traversal in Microsoft Edge Chromium

CVE-2026-57988

Relative path traversal in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

EPSS: 0.005 (42.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L.

Affected products

Microsoft Edge_chromium
Microsoft Edge (Chromium-based) — versions 1.0.0.0

Weakness classification (CWE)

CWE-23 — Relative Path Traversal

References

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-57988?: CVE-2026-57988 is a high-severity vulnerability in Microsoft Edge Chromium, classified under Relative Path Traversal. CVSS score: 7.1/10. Published 2026-07-03.
How severe is CVE-2026-57988?: High severity. CVSS v3 base score is 7.1 out of 10.