CVE-2026-26133CWE-77

M365 Copilot Information Disclosure Vulnerability

High · published March 13, 2026

CVSS v3.1
7.1
EPSS
1%
Percentile
46.0
In the wild
Unconfirmed
What it is

AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00562 · 46.0th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-03-13T21:10Z
EPSS history
Timeline
  • 13 MAR 21:10Z
    M365 Copilot Information Disclosure Vulnerability
    cvelistv5