# Cisco warns of active attacks exploiting new critical Secure Email Gateway flaw

Cisco has disclosed a newly identified critical vulnerability in its Secure Email Gateway and says attackers are already exploiting it in the wild. The company has issued warnings and guidance urging administrators to patch or mitigate immediately. Because Secure Email Gateway sits on the edge of corporate mail networks, successful exploitation could expose sensitive email traffic and internal systems at many organizations.

**Importance:** 4/5

## Sources

### Security
- [The Hacker News](https://thehackernews.com/2026/10/cisco-warns-of-active-attacks.html) — Thu, 15 Oct 2026 00:08:56 +0530