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CVE-2026-42838Important

Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

MSRC advisory NVD CVE.org

Assessment

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.

Severity
Important
CVSS base score
5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
Impact
Elevation of Privilege
EPSS, next 30 days
0.4%Higher than 33.1% of scored CVEs · FIRST model run 29 Sep 2026 · about EPSS
Public exploit code
No Nuclei template lists it
Exploitability
Exploitation Less Likely
Publicly disclosed
No
Customer action
Required: apply the update
Component
Microsoft Edge (Chromium-based)
Weakness
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Issued by
Microsoft
Published
11 May 2026 · May 2026
Last revised
11 May 2026

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

Browser
1 affected product
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