# CVE-2026-102860: Microsoft Office SharePoint improper access control privilege escalation

Source: https://junglewise.ai/threats/cve-2026-102860-improper-access-control-in-microsoft-office-sharepoint-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-102860 · Severity: high · CVSS 8.8 · Published 2026-10-13

Microsoft Office SharePoint, a collaboration and document management platform used by enterprises, contains an improper access control vulnerability. An authorized attacker can exploit this flaw to escalate their privileges across the network, potentially gaining unauthorized access to sensitive documents, user accounts, and administrative functions.

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

## Quick answers

**Is CVE-2026-102860 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102860 being exploited in the wild.

**How severe is CVE-2026-102860?** High severity, with a CVSS score of 8.8, published 13 October 2026.

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

**Is there a fix for CVE-2026-102860?** 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-2026-102860 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-102860?** Check whether you run Microsoft Office SharePoint or Microsoft SharePoint Server. 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

The vulnerability stems from improper access control in SharePoint that fails to properly validate privilege levels for authenticated users. An authorized network attacker can exploit this to elevate their privileges without requiring additional credentials or user interaction, gaining access to resources or capabilities beyond their intended permissions.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102860](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102860)

## 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)