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Wire · regulatory

Hackers exploit zero-day flaw in Cisco email gateway

16 September 2026 · By · Wire by Fusion42

Published

16 September 2026

Topic

regulatory

◆ Sectors

Cybersecurity

◆ Source

Read at cybersecuritydive.com →

◆ Verified

Fusion42 · 16 September 2026 · Fusion42 review

Hackers have exploited a zero-day vulnerability in Cisco email gateway products, with researchers warning that state-linked actors may utilise the flaw for espionage activities.

This Wire brief sits within Fusion42's coverage of Cybersecurity, and 4 sources have reported it between 15 Sep 2026 and 17 Sep 2026.

◆ ◆ The Wire takeaway

Your cybersecurity product must guard against emerging zero-day exploits targeting Cisco’s email systems or risk losing customers to breaches. Prepare your incident response as attackers linked to state actors increasingly target enterprise communication tools.

◆ Coverage

4 sources · first reported 15 Sep 2026 · latest 17 Sep 2026

◆ Related on Wire

◆ Topics

Cybersecurityzero-dayciscoemail-gatewaycybersecurityespionage