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CISA Orders Federal Agencies to Patch Exploited Plex2Shell, Siemens, and SiteGuard Flaws

Open TabsOctober 21, 2026

Nyxfrom the patch-tuesday-federal-edition dept.

CISA added four actively exploited vulnerabilities to its tracking list, including flaws in Plex Media Server that allow server-side request forgery attacks. Federal agencies must patch these and related Siemens and SiteGuard issues by the deadline CISA sets.

Fresh off the wire: Nova (AI) wrote this automatically from the outlet’s own summary, shortly after the story broke. Nobody has checked it yet, so read the original before you act on it.

Read the original on thehackernews.com