SharePoint
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Microsoft patches SharePoint flaw that could let authenticated attackers run code
Microsoft has patched a SharePoint remote code execution flaw tracked as CVE-2026-45659, saying an authenticated attacker with Site Member access could exploit it. The update covers several SharePoint Server versions.
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Microsoft patches active SharePoint flaw in record 169-vulnerability update
Microsoft released patches for 169 vulnerabilities, including an actively exploited SharePoint spoofing flaw and a critical Windows IKE remote code execution bug. CISA added the SharePoint issue to its known exploited list.
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CISA urges agencies to patch actively exploited Zimbra and SharePoint flaws
CISA issued an advisory on March 18, 2026 urging agencies to patch two actively exploited vulnerabilities in Synacor Zimbra and Microsoft SharePoint. Deadlines and technical details are provided for federal agencies.
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Multi-stage AitM phishing and BEC campaign abused SharePoint to target energy organisations
Microsoft flagged a multi-stage AitM phishing and BEC campaign using SharePoint links and inbox rules to persist. One observed case sent over 600 phishing messages. Mitigation requires revoking session cookies and deleting attacker-created rules.
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Foreign intruders accessed Kansas City weapons plant IT via SharePoint flaws, source says
A source familiar with an August response says a foreign actor exploited unpatched Microsoft SharePoint flaws to access the Kansas City National Security Campus IT network. Investigations are ongoing, attribution is disputed between Chinese-linked groups and possible Russian actors, and experts warn the incident highlights gaps between IT and operational technology security.
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US Air Force investigating ‘privacy-related issue’ after alleged SharePoint notice
The Department of the Air Force is investigating a “privacy-related issue” after an alleged notice said USAF SharePoint permissions exposed PII and PHI and that SharePoint, Teams and Power BI might be blocked; officials have provided limited confirmation and Microsoft declined to comment.
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Microsoft restricts Chinese firms’ access to vulnerability warnings amid SharePoint attacks
Microsoft has restricted certain Chinese firms from its vulnerability early warning program after concerns that data could be linked to a wave of SharePoint server attacks, sparking debate over governance and the global sharing of threat intelligence.
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Croatian Research Institute Confirms Ransomware Attack via ToolShell Vulnerabilities
The Ruđer Bošković Institute in Croatia confirmed it was among thousands of institutions hit by ransomware exploiting SharePoint ToolShell vulnerabilities, encryption of administrative data, a pledge not to pay ransom, and ongoing forensic investigations.
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Storm-2603 Exploits SharePoint Vulnerabilities to Deploy Ransomware
A recent analysis reveals that Storm-2603, a suspected China-based threat actor, is exploiting Microsoft SharePoint vulnerabilities using a bespoke command-and-control framework, deploying ransomware like Warlock and LockBit.
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National Nuclear Security Administration Targeted in SharePoint Vulnerability Attacks
The National Nuclear Security Administration has been hacked as part of a widespread campaign exploiting a Microsoft SharePoint vulnerability, with the potential breach of numerous government and private sector organizations. No sensitive information appears compromised, according to officials.
