Description
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
Microsoft Outlook for iOS Tampering Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893
Scores
CVSS v3
7.4
EPSS
0.0005
EPSS Percentile
16.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-77
Status
published
Products (2)
Microsoft/Microsoft Outlook for iOS
1.0.0 - 5.2617.1
microsoft/outlook
< 5.2617.1
Published
May 12, 2026
Tracked Since
May 12, 2026