# CVE-2026-124194: Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action


- **Severity:** Medium 6.5 (`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`)
- **Exploited in the wild:** Yes, since 10 Nov 2026 (CISA KEV)
- **Fix available:** No
- **Published:** 10 Nov 2026
- **Updated:** 12 Nov 2026
- **Also known as:** GHSA-69hg-ppjj-gg27

## What is CVE-2026-124194?

CVE-2026-124194 is a medium-severity vulnerability in Microsoft 365 Apps, published on 10 Nov 2026. 

### Official description

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

Weakness: CWE-356 (Missing User Interaction for Potentially Unsafe Action)

## Which versions are affected by CVE-2026-124194?

It affects 3 products.


Products: Microsoft 365 Apps, Microsoft Office LTSC 2021, Microsoft Office LTSC 2024.

## How do I fix CVE-2026-124194?

No fix has been published for CVE-2026-124194 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 24 Nov 2026.

## Is CVE-2026-124194 being exploited?

Yes. Attackers have exploited CVE-2026-124194 in the wild since at least 10 Nov 2026.

Public exploit code:

- CVE-2026-124194 PoC - Outlook spoofing/forced-authentication NTLM leak (patched 2026-11). Concept proof only, untested against vulnerable Outlook. (github_poc): https://github.com/AmesianX/CVE-2026-124194-poc
- CVE-2026-124194 - Outlook NTLM Hash Leak (CVSS 6.5) (github_poc): https://github.com/Ghost-Bx1/cve-2026-124194-outlook-ntlm-hash-leak

## Other vulnerabilities in Microsoft 365 Apps

- [CVE-2024-21413](https://insights.sbomify.com/CVE-2024-21413/): Microsoft Outlook Improper Input Validation (critical 9.8, exploited in the wild)
- [CVE-2023-23397](https://insights.sbomify.com/CVE-2023-23397/): Microsoft Office Outlook Privilege Escalation (critical 9.8, exploited in the wild)
- [CVE-2024-38189](https://insights.sbomify.com/CVE-2024-38189/): Microsoft Project Remote Code Execution Vulnerability (high 8.8, exploited in the wild)
- [CVE-2023-35311](https://insights.sbomify.com/CVE-2023-35311/): Microsoft Outlook Security Feature Bypass (high 8.8, exploited in the wild)
- [CVE-2026-21514](https://insights.sbomify.com/CVE-2026-21514/): Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-124194 and fix it if it is affected.

What it is: CVE-2026-124194 is a medium-severity vulnerability in Microsoft 365 Apps, published on 10 Nov 2026. 
Exploitation: Yes. Attackers have exploited CVE-2026-124194 in the wild since at least 10 Nov 2026.

Affected product: Microsoft 365 Apps. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-124194/ (Markdown: https://insights.sbomify.com/CVE-2026-124194/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-124194
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-124194
- OSV: https://osv.dev/vulnerability/CVE-2026-124194

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-124194/
Summaries are generated and may contain mistakes; the official description above is the record.