Microsoft Fix Targets Attacks on SharePoint Zero-Day

On Sunday, July 20, Microsoft Corp. issued an emergency security update for a vulnerability in SharePoint Server that is actively being exploited to compromise vulnerable organizations. The patch comes amid reports that malicious hackers have used the SharePoint flaw to breach U.S. federal and...

CISA Adds One Known Exploited Vulnerability, CVE-2025-53770 “ToolShell,” to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. See CISA’s Alert Microsoft Releases Guidance on Exploitation of SharePoint Vulnerability CVE-2025-53770 for more information and to apply the recommended mitigations...

PT-2025-30160

Name of the Vulnerable Software and Affected Versions Microsoft SharePoint Enterprise Server 2016 Microsoft SharePoint Server affected versions not specified Description Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute arbitra...

PT-2025-28603

Name of the Vulnerable Software and Affected Versions Microsoft SharePoint Server affected versions not specified Microsoft SharePoint Server Subscription Edition affected versions not specified Microsoft SharePoint Foundation affected versions not specified Description Improper authentication in...