In a chilling reminder of today’s volatile threat environment, a critical zero day vulnerability in Microsoft SharePoint is being actively exploited by threat actors in a sweeping global cyberattack campaign. Organizations using on-premises SharePoint Server are urged to take immediate action, as the flaw, now tracked as CVE-2025-24781, enables unauthenticated remote code execution (RCE) that can potentially cripple enterprise operations.
According to reports from cybersecurity agencies and leading incident response firms, attackers are exploiting the flaw to gain enhanced privileges, inject malicious scripts, and establish long term persistence across enterprise networks. Government agencies, financial institutions, healthcare systems, and Fortune 500 companies are among the high value targets currently being probed and infiltrated.
What We Know About the SharePoint Vulnerability
This vulnerability affects several supported versions of Microsoft SharePoint Server and is caused by improper input validation in the web services layer. If this security flaw is exploited, an attacker may gain the ability to execute commands on the server from a remote location, with no action needed from users. In short, attackers can silently breach critical systems and move laterally across the enterprise, exfiltrating data or deploying ransomware.
Security researchers have confirmed that multiple Advanced Persistent Threat (APT) groups are actively exploiting this flaw in real time. Evidence suggests that the attack is being automated on a large scale, utilizing malicious PowerShell payloads and command and control infrastructure that rapidly evolves to evade detection.
Microsoft Response and Patch Status
Microsoft has released an out of band patch as part of its emergency security response. It is highly recommended that all SharePoint Server users install the most recent security updates without delay. However, due to the widespread usage of legacy systems and misconfigured environments, many enterprises remain vulnerable.
The CISA (Cybersecurity and Infrastructure Security Agency) has added this vulnerability to its Known Exploited Vulnerabilities (KEV) catalog, mandating that federal agencies patch the flaw by a specified deadline. Organizations failing to address this exposure could face severe operational disruptions, reputational damage, and regulatory scrutiny.
How Veritis Can Help
At Veritis, we’ve been securing enterprise collaboration platforms for over 2 decades. Our Cybersecurity Incident Response Team is working around the clock to help clients assess exposure, patch vulnerabilities, and harden systems against further exploitation. With tailored assessments, SharePoint, specific penetration testing, and real time threat intelligence, Veritis enables enterprises to act swiftly and decisively. In times like these, taking a proactive approach to defense enables your organization to stay ahead of the curve.
Conclusion
This global cyberattack serves as a powerful reminder of the critical need to strengthen enterprise security and build lasting resilience. It sends a clear signal that organizations must modernize their security posture, especially around vital business platforms like SharePoint. Don’t wait for a breach to act. Stay ahead of the threat curve with Veritis as your trusted cybersecurity partner.
Secure Your Digital Backbone Today, Before It’s Compromised.
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