AI Summary

Threat actors are actively exploiting a newly disclosed Microsoft SharePoint vulnerability after a proof‑of‑concept was publicly released. The flaw, identified as CVE‑2026‑55040, carries a CVSS score of 9.1 and allows attackers to bypass a critical security feature due to weak authentication. The vulnerability was discovered and publicly demonstrated before attackers began leveraging it in the wild. No further details on the exploitation methods or affected SharePoint versions are provided in the report.

AI summaries can be wrong sometimes—always verify important details using the source article.