Wire · regulatory
Cisco Secure Email Gateway Flaw Exploited in the Wild, Enables Root Command Execution
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Fusion42 · 15 September 2026 · Fusion42 review
A critical vulnerability (CVE-2026-76461) in Cisco Secure Email Gateway allows remote attackers to execute root-level commands by sending crafted emails, with active exploitation reported. Patches are available only by upgrading AsyncOS software to fixed versions; no workarounds exist.
This Wire brief sits within Fusion42's coverage of Cybersecurity and Security Infrastructure.
◆ ◆ The Wire takeaway
Cisco's critical bug in Secure Email Gateway means you must prioritise patching this month or face your email gateway being hijacked for root access. Delays create immediate risk as attackers are actively exploiting the flaw in the wild.
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1 source · 15 Sep 2026
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