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. 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 (github)
Affected products and versions
- 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. 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) — CRITICAL · 2026-11-11
- Microsoft November 2026 Patch Release: 1,093 Vulnerabilities Fixed, Outlook Spoofing Zero-Day CVE-2026-124194 Actively Exploited — 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 — CRITICAL · 2026-11-10
- Microsoft November 2026 Patch Tuesday: Outlook Zero-Day CVE-2026-124194 Exploited to Steal NTLM Hashes (1,235 Flaws Fixed) — 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.