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Fencer Intel
medium 6.5

CVE-2026-124194 kev in the critical feed json

Microsoft Outlook Spoofing Vulnerability

published 20h ago modified 3h ago also EUVD-2026-122310

cvss
6.5
version 3.1, CNA
cisa kev
Exploited
added 2026-11-10
epss
—
no EPSS score yet
public exploits
0
none known

Summary

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

Patch / fix

cisa required action Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

  • Microsoft Microsoft Office LTSC 2021 16.0.14334.21048
  • Microsoft Microsoft Office LTSC 2024 16.0.17932.21140

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Timeline

  1. CISA SSVC: exploitation active
  2. Added to CISA KEV
  3. Published
  4. CISA patch deadline

Known exploited

Added
yesterday
Patch by
2026-11-24 (in 12d)
Ransomware
Not known
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor, product
Microsoft, Office
CISA name
Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
partial
Assessed
2d ago

CVSS scores

assigned by version score vector
CNA 3.1 6.5 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
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

  • Microsoft Microsoft 365 Apps for Enterprise
  • Microsoft Microsoft Office LTSC 2021
  • Microsoft Microsoft Office LTSC 2024

Classification

Weakness
  • CWE-356 Missing User Interaction for Potentially Unsafe Action

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.