Tag: Email Security Gateway
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Cisco Releases Security Updates to Patch Zero-Day AsyncOS Flaw (CVE-2025-20393)
Overview: Cisco closes a dangerous AsyncOS flaw Cisco has issued security updates for its Email Security Gateway (Secure Email and Web Manager) devices to address a critical vulnerability in AsyncOS, tracked as CVE-2025-20393. This zero-day flaw was actively exploited by suspected state‑sponsored actors, notably from China, underscoring the urgency for timely patching across affected deployments.…
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Cisco Fixes AsyncOS Zero-Day Exploited in the Wild: CVE-2025-20393
Overview: Cisco addresses AsyncOS zero-day exploitation Cisco has released security updates for its Email Security Gateway (ESG) and Secure Email and Web Manager (SEWM) devices to remediate a critical vulnerability in AsyncOS, tracked as CVE-2025-20393. The flaw was actively exploited as a zero-day by a group believed to be working on behalf of a nation-state,…
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Cisco Ships Critical AsyncOS Patch to Close CVE-2025-20393 Exploited as Zero-Day
Overview: Cisco Addresses a Zero-Day in AsyncOS Cisco has released security updates for its Email Security Gateway (ESG) and Secure Email and Web Manager (SEWM) devices to fix a critical vulnerability known as CVE-2025-20393 in the AsyncOS operating system. The flaw, which was exploited as a zero-day by suspected attackers linked to Chinese threat actors,…