CVE-2025-20393

Entity category: LAW

BigTech Companies

Cisco Patches Critical Zero-Day Flaw in AsyncOS (CVE-2025-20393)

January 18, 2026
Cisco logo over stylized cityscape with hands on keyboard.

Cisco has patched a critical zero-day vulnerability (CVE-2025-20393) in its Email Security and Web Manager appliances, which was actively exploited…

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BigTech Companies

Cisco Customers Vulnerable to New Chinese Hacking Campaign

December 20, 2025
Illuminated Cisco logo with soundwave graphic at a trade show booth.

A Chinese state-sponsored hacking campaign is exploiting a critical zero-day vulnerability (CVE-2025-20393) in Cisco's Secure Email Gateway and Web Manager…

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BigTech Companies

Cisco Email Security Appliances Hacked via Unpatched Zero-Day

December 19, 2025
Glowing red doorway surrounded by code on a dark, futuristic background.

A critical zero-day vulnerability (CVE-2025-20393) in Cisco email security appliances is being exploited, allowing attackers to gain full control, particularly…

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