Vulnerabilities – ByteVanguard

Cisco Zero-Day CVE-2025-20393 Actively Exploited by China-Linked APT UAT-9686

ByteVanguard Editor December 20, 2025 No Comments

Cisco has disclosed a maximum-severity zero-day vulnerability (CVE-2025-20393, CVSS 10.0) in AsyncOS software for Secure Email Gateway and Secure Email and Web Manager appliances. A China-nexus APT group (tracked as…

CISA Adds Cisco, SonicWall, and ASUS Flaws to Known Exploited Vulnerabilities Catalog (December 2025)

ByteVanguard Editor December 18, 2025 No Comments

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added three actively exploited vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog on December 17, 2025. The flaws affect Cisco Secure Email…

Category: Vulnerabilities

Cisco Zero-Day CVE-2025-20393 Actively Exploited by China-Linked APT UAT-9686

CISA Adds Cisco, SonicWall, and ASUS Flaws to Known Exploited Vulnerabilities Catalog (December 2025)