CVE-2026-124194

MEDIUM CISA KEV

Published Nov 10, 2026 Modified Nov 11, 2026 CWE-356

Description

Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

Is your site exposed to CVE-2026-124194?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0162

Probability of exploitation

0.76%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Nov 10, 2026 Remediation due: Nov 24, 2026

Weakness Type (CWE)

CWE-356 CWE-356

Affected Products

Vendor	Product	Versions
microsoft	365_apps	All
microsoft	365_apps	All
microsoft	office_2021	All
microsoft	office_2021	All
microsoft	office_2024	All
microsoft	office_2024	All

References

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124194

Other References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-124194

Frequently Asked Questions

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2026-124194? +

CVE-2026-124194 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0162, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-124194? +

CVE-2026-124194 affects products from microsoft, specifically: 365_apps, office_2021, office_2024. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-124194? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-2450 8.8

NI Vision Builder AI VBAI File Processing Missing Warning Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute …

CVE-2025-3909 8.1

Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By crafting a nested …

CVE-2025-14403 7.8

PDFsam Enhanced Launch Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on …

CVE-2026-28593 7.8

In getItemList of SettingsFragment.java, there is a possible user interaction bypass due to misleading or insufficient UI. This could lead …

CVE-2025-14412 7.8

Soda PDF Desktop XLS File Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary …

CVE-2025-14414 7.8

Soda PDF Desktop Word File Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary …