# CVE-2026-124194 — Microsoft 365 Apps for Enterprise **CISA KEV** > As of 2026-11-11, CVE-2026-124194 is a MEDIUM-severity vulnerability in Microsoft 365 Apps for Enterprise, CVSS v3.1 6.5. It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-11-10), with a US federal remediation deadline of 2026-11-24. Threadlinqs Intelligence links 4 tracked threat campaigns to CVE-2026-124194, most recently “Microsoft Patch Tuesday November 2026: ~1,095 vulnerabilities, 64 critical, one exploited Outlook NTLM-leak spoofing zero-day (CVE-2026-124194)”. **Last updated:** 2026-11-11 ## What is CVE-2026-124194? Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network. The record classifies CVE-2026-124194 under weakness class [CWE-356](https://cwe.mitre.org/data/definitions/356.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality. 3 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1 day ago. ## Severity and exploitation probability - **CVSS v3.1 base score:** 6.5 — MEDIUM (`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`) - **CISA KEV:** Listed since 2026-11-10, federal remediation deadline 2026-11-24 - **Threadlinqs priority:** 9/10 — CISA KEV-listed, which Threadlinqs floors at 9 - **Published:** 2026-11-10 ## Is CVE-2026-124194 being exploited? CISA added CVE-2026-124194 to the Known Exploited Vulnerabilities catalog on 2026-11-10, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-11-24 under BOD 22-01. Weaponised exploit code for CVE-2026-124194 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 63 in the Threadlinqs vulnerability feed. - [AmesianX/CVE-2026-124194-poc](https://github.com/AmesianX/CVE-2026-124194-poc) (github) ## Affected products and versions - [Microsoft](https://intel.threadlinqs.com/vendors/microsoft): 365 Apps for Enterprise, Office LTSC 2021, Office LTSC 2024 ## How to fix CVE-2026-124194 Patch reference: [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124194](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124194). Because CVE-2026-124194 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-11-24. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory. ## Threat activity tracking CVE-2026-124194 4 tracked threats in the Threadlinqs corpus reference CVE-2026-124194, either in the campaign’s CVE list or as an indicator on the campaign record. - [Microsoft Patch Tuesday November 2026: ~1,095 vulnerabilities, 64 critical, one exploited Outlook NTLM-leak spoofing zero-day (CVE-2026-124194)](https://intel.threadlinqs.com/threat/TL-2026-5711) — CRITICAL · 2026-11-11 - [Microsoft November 2026 Patch Release: 1,093 Vulnerabilities Fixed, Outlook Spoofing Zero-Day CVE-2026-124194 Actively Exploited](https://intel.threadlinqs.com/threat/TL-2026-5691) — CRITICAL · 2026-11-10 - [Microsoft November 2026 Patch Tuesday (1,093 bugs) - Exploited Outlook CVE-2026-124194, Barracuda CVE-2026-116606/CVE-2026-111560 (CISA-directed), N-able N-central PoC scanning](https://intel.threadlinqs.com/threat/TL-2026-5681) — CRITICAL · 2026-11-10 - [Microsoft November 2026 Patch Tuesday: Outlook Zero-Day CVE-2026-124194 Exploited to Steal NTLM Hashes (1,235 Flaws Fixed)](https://intel.threadlinqs.com/threat/TL-2026-5673) — HIGH · 2026-11-10 ## Sources Enriched from CVE.org, NVD, CISA KEV, public proof-of-concept repositories. This product uses the NVD API but is not endorsed or certified by the NVD. **Vendor advisory and patch** - [msrc.microsoft.com — vendor advisory](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124194) Canonical: https://intel.threadlinqs.com/cve/CVE-2026-124194 Every threat comes with one complete detection in Splunk SPL, Microsoft KQL and Sigma, free for everyone; a free account adds daily TL Creds to unlock the rest. Sign up free (Blue): https://threadlinqs.com/?modal=signup Indicator values unlock with TL Creds (https://threadlinqs.com/tl-creds); MCP access for AI agents needs Purple: https://intel.threadlinqs.com/mcp