59/59 sources · synced 00:50 UTC Customize Public mode
CVE-2026-66323Important

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code 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
Remote Code Execution
EPSS, next 30 days
0.4%Higher than 33% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
Exploitability
Exploitation Unlikely
Publicly disclosed
No
Customer action
Required: apply the update
Component
Microsoft Edge (Chromium-based)
Weakness
CWE-141: Improper Neutralization of Parameter/Argument Delimiters
Issued by
Microsoft
Published
28 Aug 2026 · August 2026
Last revised
28 Aug 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
5 affected products
  • Microsoft Edge for Android
  • Microsoft Edge for iOS
  • Microsoft Edge for Linux
  • Microsoft Edge for MAC
  • Microsoft Edge for Windows
ChangeIntel is an independent tool and is not affiliated with or endorsed by Microsoft. Microsoft, Windows, Microsoft 365, Azure, and related names are trademarks of the Microsoft group of companies. Data comes from public sources listed on Sources; every item links to its original page. Dates and statuses can change after they are read. Built by Evotec. This is the public demo. It can also run on your own server, with your Microsoft 365 tenant and device data kept inside your network; Evotec can help you deploy and extend it.