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NVD Vulnerability Details :
CVE-2026-42893
Analyzed
More InfoOfficial Page
Source-secure@microsoft.com
View Known Exploited Vulnerability (KEV) details
Published At-12 May, 2026 | 18:17
Updated At-13 May, 2026 | 18:37

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

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.4HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 7.4
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CPE Matches
Microsoft Corporation
microsoft
>>outlook>>Versions before 5.2617.1(exclusive)
cpe:2.3:a:microsoft:outlook:*:*:*:*:*:iphone_os:*:*
Weaknesses
CWE IDTypeSource
CWE-77Primarysecure@microsoft.com
CWE ID: CWE-77
Type: Primary
Source: secure@microsoft.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893secure@microsoft.com
Vendor Advisory
Hyperlink: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893
Source: secure@microsoft.com
Resource:
Vendor Advisory
Change History
0Changes found
Details not found