VulnerabilityBleeping Computer
8.0 — CRITICAL
CISA: Microsoft SharePoint RCE flaw now actively exploited
CISA warned on Wednesday that attackers have begun exploiting a high-severity Microsoft SharePoint remote code execution vulnerability patched in May. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A high-severity Microsoft SharePoint remote code execution vulnerability (CVE-2026-45659) is being actively exploited by attackers, allowing them to execute arbitrary code on unpatched servers with low privileges.
⚙️Technical Details
Affected Systems
Microsoft SharePoint Enterprise Server 2016Microsoft SharePoint Server 2019Microsoft SharePoint Server Subscription Edition
Attack Vectors
Network (AV:N)
💥Impact Assessment
Severity: Critical
Who Is at Risk
U.S. federal agencies and organizations with exposed Microsoft SharePoint servers
🛡️Recommended Actions
1Apply the latest security updates for affected systems as soon as possible
2Monitor network traffic for signs of exploitation and implement intrusion detection and prevention measures
3Conduct a thorough vulnerability assessment to identify all exposed systems and prioritize patching accordingly
📦Affected Products
Microsoft SharePoint Enterprise Server 2016Microsoft SharePoint Server 2019Microsoft SharePoint Server Subscription Edition
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