CISA Mandates Immediate Patching as Chinese Hackers Actively Exploit SharePoint Vulnerabilities

TL;DR

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has ordered immediate patching of two critical Microsoft SharePoint vulnerabilities actively exploited by Chinese hackers. Federal agencies must address these flaws by July 23, 2025, to prevent further risks.

CISA Issues Urgent Directive for Patching SharePoint Flaws

On July 22, 2025, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) added two critical Microsoft SharePoint vulnerabilities, CVE-2025-49704 and CVE-2025-49706, to its Known Exploited Vulnerabilities (KEV) catalog. This decision was prompted by evidence of active exploitation by Chinese hackers.

Mandatory Remediation for Federal Agencies

Federal Civilian Executive Branch (FCEB) agencies have been directed to remediate these vulnerabilities by July 23, 2025. This urgent timeline underscores the severity of the threat and the need for immediate action.

Details of the Vulnerabilities

The identified vulnerabilities, CVE-2025-49704 and CVE-2025-49706, pose significant risks to organizations using Microsoft SharePoint. These flaws allow attackers to gain unauthorized access to sensitive information and potentially compromise entire systems.

Implications and Next Steps

The active exploitation of these vulnerabilities highlights the importance of prompt patching. Organizations are advised to:

• Apply the latest security patches: Ensure all systems are updated to mitigate these vulnerabilities.
• Conduct thorough security audits: Regularly assess systems for potential vulnerabilities.
• Implement robust monitoring: Enhance detection capabilities to identify and respond to threats promptly.

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Conclusion

The directive from CISA emphasizes the critical need for timely patching and security measures. Organizations must remain vigilant and proactive in addressing vulnerabilities to safeguard against evolving cyber threats.

Additional Resources

For further insights, check:

• CISA Known Exploited Vulnerabilities Catalog
• Microsoft Security Update Guide