Fresh SharePoint Vulnerability Exploited Soon After Disclosure

The critical-severity security defect allows remote, authenticated attackers to execute arbitrary code on the server. The post Fresh SharePoint Vulnerability Exploited Soon After Disclosure appeared first on SecurityWeek .

The article reports a newly disclosed, critical SharePoint vulnerability that allows remote, authenticated attackers to execute arbitrary code on the server, consistent with recent deserialization-of-untrusted-data RCE flaws in on‑premises SharePoint (e.g., CVE-2025-53770 and related bugs) that have been rapidly and actively exploited in the wild.[1][2][4][8][11][15] It notes exploitation shortly after public disclosure, highlighting the narrow patch window and the risk of full server compromise. From a RealGround perspective, such SharePoint RCE issues pose AI supply chain risk whenever SharePoint is part of the infrastructure hosting AI agents, their orchestration services, or data pipelines: compromise of the SharePoint server can give an attacker lateral access to model artifacts, training data, or agent configuration, as well as a foothold to plant malicious content used by AI workflows.[2][10][11][15] Organizations should treat vulnerable SharePoint instances as high‑value supply‑chain components, ensure rapid patching and crypto/key rotation, and include them in continuous AI red teaming and SBOM-driven dependency reviews so that AI systems relying on SharePoint-integrat