CVE-2026-42893CWE-77

Microsoft Outlook for iOS Tampering Vulnerability

High · published May 12, 2026

CVSS v3.1
7.4
EPSS
1%
Percentile
52.9
In the wild
Unconfirmed
What it is

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
2026-05-12T16:59Z
EPSS history
Timeline
  • 12 MAY 16:59Z
    Microsoft Outlook for iOS Tampering Vulnerability
    cvelistv5