# CVE-2026-109466: Microsoft Office SharePoint privilege elevation

Source: https://junglewise.ai/threats/cve-2026-109466-missing-authorization-in-microsoft-office-sharepoint-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-109466 · Severity: high · CVSS 8 · Published 2026-11-10

Microsoft Office SharePoint is a web-based document and team collaboration platform used widely in corporate environments. An authorized user on an adjacent network can exploit a missing authorization check to elevate their privileges beyond their intended access level, potentially gaining administrative control of shared documents and team sites.

Technologies: [Microsoft Office SharePoint](https://junglewise.ai/threats/technologies/office-sharepoint). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-109466 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109466 being exploited in the wild.

**How severe is CVE-2026-109466?** High severity, with a CVSS score of 8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Office SharePoint.

**Is there a fix for CVE-2026-109466?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-109466 attacked?** It is attacked from the adjacent network.

**Am I affected by CVE-2026-109466?** Check whether you run Microsoft Office SharePoint. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A missing authorization check in Microsoft Office SharePoint allows an already-authenticated attacker on an adjacent network to bypass privilege level restrictions and escalate their access. The vulnerability does not require user interaction and affects authenticated users who have some baseline access to the SharePoint instance. Exploitation results in privilege elevation, enabling attackers to access or modify restricted content and perform administrative actions.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109466](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109466)

## Related threats

- [Microsoft Office SharePoint privilege escalation via missing authorization](https://junglewise.ai/threats/cve-2026-88176-missing-authorization-in-microsoft-office-sharepoint-allows-an)
- [Microsoft Office SharePoint XSS privilege escalation](https://junglewise.ai/threats/cve-2026-80095-improper-neutralization-of-input-during-web-page-generation-cross)
- [Microsoft Office SharePoint server-side request forgery](https://junglewise.ai/threats/cve-2026-124210-server-side-request-forgery-ssrf-in-microsoft-office-sharepoint)
- [Microsoft Office SharePoint privilege escalation via incorrect authorization](https://junglewise.ai/threats/cve-2026-123391-incorrect-authorization-in-microsoft-office-sharepoint-allows-an)
- [Microsoft Office SharePoint deserialization of untrusted data](https://junglewise.ai/threats/cve-2026-123390-deserialization-of-untrusted-data-in-microsoft-office-sharepoint)