CVE-2026-124194: in the CISA KEV catalogue

Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability. CISA added CVE-2026-124194 to the Known Exploited Vulnerabilities catalogue on 2026-11-10 with a default due date of 2026-11-24. Known ransomware campaign use: Unknown. Forensic triage flag: No.

Microsoft Office Outlook contains a missing user interaction for potentially unsafe action vulnerability that allows an unauthorized attacker to perform spoofing over a network. (CISA description)

Vendor / product: Microsoft Office
CWE: CWE-356
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.
EPSS: Not scored

Vendor and reference links (from CISA)

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.10, released 2026-11-10, 1,779 entries (checked 2026-11-10). EPSS model v2026.06.15, scored 2026-11-10, 402,773 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2026-124194 in the CISA KEV catalogue?

Yes. CISA added CVE-2026-124194 (Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2026-11-10. CISA's default due date for it is 2026-11-24.

Is CVE-2026-124194 used in ransomware attacks?

CISA marks known ransomware campaign use as Unknown for CVE-2026-124194. That means CISA lacks confirmation, not that ransomware groups do not use it.

What should I do about CVE-2026-124194?

CISA's 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.

Sources

CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
NVD record for CVE-2026-124194