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CVE-2026-48561CriticalRevised 24 Jul

Microsoft Edge Copilot Remote Code Execution Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper neutralization of special elements used in a command ('command injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to execute code over a network.

Severity
Critical
CVSS base score
Not published
Impact
Remote Code Execution
EPSS, next 30 days
0.9%Higher than 56.9% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
Exploitability
Exploitation Less Likely
Publicly disclosed
No
Customer action
Required: apply the update
Component
Copilot Chat (Microsoft Edge)
Weakness
CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Issued by
Microsoft
Published
14 Jul 2026 · July 2026
Last revised
24 Jul 2026Corrected the CVE description and title. This is an informational change only.

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
2 affected products
  • Microsoft Edge Copilot for Android
  • Microsoft Edge Copilot for IOS
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