What is CVE-2026-45495?

CVE-2026-45495 is a high-severity vulnerability in Microsoft Edge_chromium, classified under Path Traversal: '.../...//'. CVSS score: 8.8/10. Published 2026-05-18.

How severe is CVE-2026-45495?

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

RCE in Microsoft Edge_chromium

CVE-2026-45495

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

EPSS: 0.001 (28.9th percentile) — read the EPSS interpretation.

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
Microsoft Edge (Chromium-based) — versions 1.0.0.0

Weakness classification (CWE)

CWE-35 — Path Traversal: '.../...//'
CWE-20 — Improper Input Validation
CWE-94 — Code Injection
CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

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

Frequently asked questions

What is CVE-2026-45495?: CVE-2026-45495 is a high-severity vulnerability in Microsoft Edge_chromium, classified under Path Traversal: '.../...//'. CVSS score: 8.8/10. Published 2026-05-18.
How severe is CVE-2026-45495?: High severity. CVSS v3 base score is 8.8 out of 10.