CVE-2026-48561CWE-77

Microsoft Edge Copilot Remote Code Execution Vulnerability

Critical · published July 14, 2026

CVSS v3.1
9.6
EPSS
1%
Percentile
58.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00863 · 58.2th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-07-14T17:04Z
EPSS history
Timeline
  • 14 JUL 17:04Z
    Microsoft Edge Copilot Remote Code Execution Vulnerability
    cvelistv5