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

CISA has ordered U.S. federal agencies to patch known exploited vulnerabilities in Plex2Shell, Siemens, and SiteGuard products. The flaws are being actively exploited, raising risks of compromise across government networks. The directive sets remediation deadlines and underscores urgent exposure in widely used enterprise and security software.

**Importance:** 4/5

## Sources

### Security
- [The Hacker News](https://thehackernews.com/2026/10/cisa-orders-federal-agencies-to-patch.html) — Wed, 21 Oct 2026 12:56:49 +0530