Microsoft SharePoint Vulnerability CVE-2026-50522 Under Investigation
An early warning has been issued regarding a deserialization vulnerability in Microsoft SharePoint, tracked as CVE-2026-50522, which could potentially allow unauthorized remote code execution.
What happened
Microsoft SharePoint is reportedly affected by a deserialization of untrusted data vulnerability, identified as CVE-2026-50522. This vulnerability appears to enable an unauthorized attacker to execute code over a network. The issue is currently under investigation by relevant authorities. Software engineers using Microsoft SharePoint should upgrade to the latest version and monitor for any suspicious activity to mitigate potential risks. Further details about the vulnerability, including specific version ranges and exact exploitation methods, are not yet confirmed and should be consulted from primary sources such as the CISA Known Exploited Vulnerabilities Catalog.
How 0Day mitigates this
microsoft-sharepoint is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.