Vulnerability in Microsoft Edge_chromium
CVE-2026-42838
Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
EPSS: 0.000 (15.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
Affected products
- Microsoft Edge_chromium
- Microsoft Edge (Chromium-based) — versions 1.0.0.0
Weakness classification (CWE)
References
- Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42838?
- CVE-2026-42838 is a medium-severity vulnerability in Microsoft Edge_chromium, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.4/10. Published 2026-05-12.
- How severe is CVE-2026-42838?
- Medium severity. CVSS v3 base score is 5.4 out of 10.