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CISA Flags Five Exploited Flaws in Common Server Software, Sets 11 October Deadline

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The US cybersecurity agency CISA added five vulnerabilities to its Known Exploited Vulnerabilities catalog on 8 October 2026, requiring federal agencies to act by 11 October. The flaws affect widely used server software, including the BIND DNS server, ProFTPD FTP server, Apache Struts framework, ONLYOFFICE Documents, and Strapi content system. Most of the flaws were disclosed between 2015 and 2021, and vendor fixes have existed for years. The impact ranges from denial of service to unauthenticated file access and code execution. Four of the entries were also flagged for forensic checks to detect whether systems were already compromised.

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CISA Flags Five Exploited Flaws in Common Server Software, Sets 11 October Deadline · ShortSingh