CISA Flags Actively Exploited OpenPLC Flaw (CVE-2021-26829) Vulnerability Report CISA Flags Actively Exploited OpenPLC Flaw (CVE-2021-26829) Ddos November 29, 2025 0 Read More Read more about CISA Flags Actively Exploited OpenPLC Flaw (CVE-2021-26829)