Critical Calibre Flaw (CVE-2025-64486, CVSS 9.3) Allows RCE via Malicious FB2 E-book Vulnerability Report Critical Calibre Flaw (CVE-2025-64486, CVSS 9.3) Allows RCE via Malicious FB2 E-book Ddos November 11, 2025 0 Read More Read more about Critical Calibre Flaw (CVE-2025-64486, CVSS 9.3) Allows RCE via Malicious FB2 E-book