SharePoint Input Validation Vulnerability - 20260827001¶
Overview¶
The WASOC has been made aware of a high severity vulnerability in Microsoft Office SharePoint with Improper input validation which allows an unauthorized attacker to execute code over a network.
What is vulnerable?¶
| Product(s) Affected | Version(s) | CVE | CVSS | Severity |
|---|---|---|---|---|
| Microsoft Office SharePoint | Version 16.0.0 before 16.0.5565.1001 | CVE-2026-63520 | 8.1 | High |
What has been observed?¶
The WASOC has not received any reports of exploitation of this vulnerability on Western Australian Government networks at the time of writing.
Recommendation¶
The WASOC recommends administrators apply the solutions as per vendor instructions to all affected devices within expected timeframes (refer Patch Management):