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VulnerabilityPublished

CVE-2026-124194: Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized

Affects Microsoft OfficeSource GCVE Database

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Authoritative record:CVE-2026-124194· Medium 6.5

Exploited in the wild · KEV due 24 Nov 2026 · public exploit available · fixed in 16.0.14334.21048 : patch Microsoft Office now.

Data as of 10 Nov 2026, 22:34 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (microsoft)CVSS 3.16.5
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
Patch
Available – fixed in 16.0.14334.21048, 16.0.17932.21140
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

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: evidence found.

    Listed in CISA KEV the same day as disclosure

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Microsoft Corporation

    , 4 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 13 minutes after disclosure

  4. , the same day as disclosure

  5. KEV remediation due

    US federal deadline

    , 14 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade Microsoft Office LTSC to 16.0.14334.21048 (2021) or 16.0.17932.21140 (2024).

Affected software

ProductAffectedFixed in
MicrosoftMicrosoft 365 Apps for EnterpriseAffected
  • =16.0.1
Fixed in–
MicrosoftMicrosoft Office LTSC 2021Affected
  • >=16.0.1 <16.0.14334.21048
Fixed in
  • 16.0.14334.21048
MicrosoftMicrosoft Office LTSC 2024Affected
  • >=16.0.0 <16.0.17932.21140
Fixed in
  • 16.0.17932.21140

Description

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

References

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