CVE-2025-49704—Microsoft SharePoint Code Injection Vulnerability

Vulnerability Name

Microsoft SharePoint Code Injection Vulnerability

Description

Microsoft SharePoint contains a code injection vulnerability that could allow an authorized attacker to execute code over a network. This vulnerability could be chained with CVE-2025-49706. CVE-2025-53770 is a patch bypass for CVE-2025-49704, and the updates for CVE-2025-53770 include more robust protection than those for CVE-2025-49704.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

KNOWN

Action

Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

Additional Notes

• CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770
• https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49704
• https://nvd.nist.gov/vuln/detail/CVE-2025-49704

Related News Articles

• Chinese Threat Actors Exploit ToolShell SharePoint Flaw Weeks After Microsoft's July PatchOctober 22, 2025
• Sharepoint ToolShell attacks targeted orgs across four continentsOctober 22, 2025
• The Heat Wasn't Just Outside: Cyber Attacks Spiked in Summer 2025August 5, 2025
• Ransomware gangs join attacks targeting Microsoft SharePoint serversAugust 4, 2025
• Storm-2603 Deploys DNS-Controlled Backdoor in Warlock and LockBit Ransomware AttacksAugust 1, 2025

Related Weaknesses

• CWE-94