Cisco Warns of Active Attacks Exploiting New Critical Secure Email Gateway Vulnerability

AI Summary

Cisco disclosed and warned of active exploitation of a critical flaw in Cisco Secure Email Gateway that allows an unauthenticated remote attacker to write arbitrary files to the appliance OS and execute commands as root via a specially crafted email attachment. Because the attack vector requires only sending an email through the gateway — no login needed — the exposure is extremely broad for any organization using this product for inbound mail filtering.

Read full article → https://thehackernews.com/2026/10/cisco-warns-of-a…

Relevance score: 90.0/100

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