SharePoint Shock: Zero-Day Exploit CVE-2025-53770 Wreaks Havoc!
A SharePoint zero-day vulnerability, CVE-2025-53770, is being actively exploited, leaving on-premises servers vulnerable. Microsoft is preparing a fix, but in the meantime, enabling AMSI and deploying Microsoft Defender are recommended. Until then, SharePoint admins might need extra caffeine to stay alert for cyber shenanigans!
Hot Take:
Looks like SharePoint’s got more holes than Swiss cheese, and hackers are having a field day turning IT departments into gouda hunters! Who knew document sharing could lead to such a wild ride? Microsoft might want to consider adding “Bug Swatter” to the next version of SharePoint before hackers convert their server farms into amusement parks.
Key Points:
- SharePoint zero-day vulnerability CVE-2025-53770 is actively being exploited.
- This flaw allows unauthorized code execution via deserialization of untrusted data.
- Microsoft is working on a patch but recommends AMSI integration and Microsoft Defender in the meantime.
- Attacks are targeting on-premises SharePoint servers, not SharePoint Online.
- Vulnerability is a variant of CVE-2025-49706, linked to the infamous “ToolShell” attack chain.
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