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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has urged government agencies to apply patches for two security flaws impacting Synacor Zimbra Collaboration Suite (ZCS) and Microsoft Office SharePoint, stating they have been actively exploited in the wild
US Cyber Defense Agency Releases Best Practices to Harden Exchange EnvironmentsU.S. cyber defense officials and their international partners issued a new blueprint for mitigating Microsoft Exchange vulnerabilities on Thursday as governments worldwide continue to grapple with persistent intrusion campaigns targeting on-premises Microsoft Exchange servers in hybrid environments.
Threat actors with ties to China exploited the ToolShell security vulnerability in Microsoft SharePoint to breach a telecommunications company in the Middle East after it was publicly disclosed and patched in July 2025
The U.S. Cybersecurity and Infrastructure Security Agency (CISA), on July 22, 2025, added two Microsoft SharePoint flaws, CVE-2025-49704 and CVE-2025-49706, to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation
Microsoft has revealed that a now-patched security flaw impacting the Windows Common Log File System (CLFS) was exploited as a zero-day in ransomware attacks aimed at a small number of targets
Proof-of-concept (Poc) code has been released for a now-patched high-severity security flaw in the Windows CryptoAPI that the U.S. National Security Agency (NSA) and the U.K. National Cyber Security Centre (NCSC) reported to Microsoft last year
A suspected state-aligned threat actor has been attributed to a new set of attacks exploiting the Microsoft Office "Follina" vulnerability to target government entities in Europe and the U.S