Medium · published July 8, 2025
CVSS calls it medium at 6.5. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.
⚠️ An unauthorized attacker could impersonate legitimate users in Microsoft SharePoint! This flaw in authentication is like a party crasher who sneaks in with a fake invite. 🎭 Think of SharePoint as a VIP club with a bouncer at the door. If the bouncer fails to check IDs properly, any random person could stroll in, pretending to be someone else, making it super easy for troublemakers to blend in. This vulnerability could allow an attacker to perform spoofing over a network, leading to unauthorized access to sensitive information and actions within SharePoint. Just imagine the chaos when someone can masquerade as a trusted user—data theft, misinformation, and a breach of trust are all on the table!
Think of SharePoint as a VIP club with a bouncer at the door. If the bouncer fails to check IDs properly, any random person could stroll in, pretending to be someone else, making it super easy for troublemakers to blend in. CVE-2025-49706 stems from improper authentication mechanisms in Microsoft Office SharePoint, which can be exploited to let attackers impersonate other users without their consent, essentially bypassing security protocols meant to protect the system.
This vulnerability could allow an attacker to perform spoofing over a network, leading to unauthorized access to sensitive information and actions within SharePoint. Just imagine the chaos when someone can masquerade as a trusted user—data theft, misinformation, and a breach of trust are all on the table! To protect your SharePoint environment, ensure that you apply the latest security updates provided by Microsoft to patch this vulnerability. Additionally, review and enhance your authentication processes to ensure they meet best practices. Regularly audit user permissions to limit exposure. You've got this! Stay vigilant, and you'll have your SharePoint environment locked down in no time! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| microsoft/sharepoint_enterprise_server | all versions | — |
| microsoft/sharepoint_server | < 16.0.18526.20424 | 16.0.18526.20424 |
| microsoft/sharepoint_server | all versions | — |