Overview
CVE-2026-124194 has been added to the CISA Known Exploited Vulnerabilities catalog. Published on November 10, 2026. Threat actors are actively exploiting this vulnerability in real-world attacks.
Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Threat Intelligence
| Metric | Value |
|---|---|
| CVE ID | CVE-2026-124194 |
| Severity | HIGH |
| CVSS Score | 0.0/10 |
| CISA KEV | ✅ Yes — Actively Exploited |
| KEV Date Added | November 10, 2026 |
| Remediation Deadline | November 24, 2026 |
Why This Matters
This vulnerability has been added to the CISA Known Exploited Vulnerabilities (KEV) catalog, which means threat actors are actively exploiting it in real-world attacks.
Federal agencies are required to remediate by November 24, 2026. All organizations should treat this deadline as a strong recommendation.
CISA Notes: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-124194 ; https://nvd.nist.gov/vuln/detail/CVE-2026-124194
Recommended Actions
- Verify exposure — Determine if your environment uses the affected software.
- Apply patches — Update to the latest version as soon as a fix is available.
- Monitor for compromise — Check logs for unusual activity.
- Meet the deadline — CISA recommends remediation by November 24, 2026.
References
CVE data aggregated from the National Vulnerability Database (NVD), CISA Known Exploited Vulnerabilities catalog, and FIRST EPSS. Analysis updated as new intelligence becomes available. Last updated: 2026-11-10.