# CVE-2026-124228

Authenticated path traversal in Microsoft Outlook enabling remote code execution

- Page: https://www.vulneraibility.com/cve/CVE-2026-124228
- CVSS: 8.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.76% (percentile 55.6)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-10)
- Weakness: CWE-22
- Published: 2026-11-10

## Affected versions

- Microsoft Microsoft 365 Apps for Enterprise: affected >= 16.0.1 and < https://aka.ms/OfficeSecurityReleases
- Microsoft Microsoft Office LTSC 2021: affected >= 16.0.1 and < 16.0.14334.21048
- Microsoft Microsoft Office LTSC 2024: affected >= 16.0.0 and < 16.0.17932.21140

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated path-traversal in Outlook enables remote code execution over a network, allowing arbitrary code execution, persistence, or malware installation.

## Action

Immediate action required

## Recommendation

Apply Microsoft security update for CVE-2026-124228 immediately; restrict Outlook exposure.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124228

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.