CVE-2026-124194: Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized
Affects Microsoft OfficeSource GCVE Database
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
Thin evidence
One scorer or none| CNA (microsoft) | CVSS 3.1 | 6.5 |
|---|
- 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:CExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: evidence found.
Listed in CISA KEV the same day as disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by Microsoft Corporation
, 4 days before disclosure
CVE published
on cve.org
, t = 0
In Threat Radar
record ingested
, 13 minutes after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, the same day as disclosure
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
| Product | Affected | Fixed in |
|---|---|---|
| MicrosoftMicrosoft 365 Apps for Enterprise | Affected
| Fixed in– |
| MicrosoftMicrosoft Office LTSC 2021 | Affected
| Fixed in
|
| MicrosoftMicrosoft Office LTSC 2024 | Affected
| Fixed in
|
Description
Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.