CVE-2026-124194

Microsoft Outlook Spoofing Vulnerability

CVSS 3.1 Medium 6.5Known exploited (CISA KEV)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C

Description

Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

Key data

CVSS 3.1 Medium 6.5

Score published by microsoft in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C

Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: None
No account or privileges are needed.
User interaction: Required
A user has to do something first, such as opening a file or following a link.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: None
No effect on the trustworthiness of data.
Availability impact: None
No effect on availability.

Metric	Value	What it means
Attack vector	Network	The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity	Low	No special conditions are needed. The attack can be repeated at will.
Privileges required	None	No account or privileges are needed.
User interaction	Required	A user has to do something first, such as opening a file or following a link.
Scope	Unchanged	The impact stays within the vulnerable component.
Confidentiality impact	High	Serious or total effect on the secrecy of data.
Integrity impact	None	No effect on the trustworthiness of data.
Availability impact	None	No effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog: Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability
Added to the catalog: Nov 10, 2026
Federal due date: Nov 24, 2026

CISA assessment as of Nov 10, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation: Recorded by CISA as active
Automatable: no
Technical impact: partial

Weakness (CWE)

CWE catalog version 5.0.

CWE-356Missing User Interaction for Potentially Unsafe Action

Affected products

Products listed in the CVE record, as the CNA published them.

Microsoft 365 Apps for Enterprise
- affected: 16.0.1 up to before https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021
- affected: 16.0.1 up to before 16.0.14334.21048
Microsoft Office LTSC 2024
- affected: 16.0.0 up to before 16.0.17932.21140

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Microsoft Outlook Spoofing Vulnerability (msrc.microsoft.com)vendor-advisorypatch

Timeline

ID reservedNov 6, 2026
Added to CISA KEVNov 10, 2026
Record publishedNov 10, 2026
Record last updatedNov 10, 2026

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 23:43 UTC. Sources and licenses