CVE-2026-42895CWE-77

Microsoft Copilot Tampering Vulnerability

Medium · published June 19, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
52.9
In the wild
Unconfirmed
What it is

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00707 · 52.9th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-06-19T20:27Z
EPSS history
Timeline
  • 19 JUN 20:27Z
    Microsoft Copilot Tampering Vulnerability
    cvelistv5