# Cisco Snort 3 CVE-2026-20043: Upgrade FTD and IOS XE

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## Article Metadata
- Title: Cisco Snort 3 CVE-2026-20043: Upgrade FTD and IOS XE
- Summary: Snort 3 flaws CVE-2026-20043 and CVE-2026-20236 score 9.0. Fixed releases for Secure Firewall Threat Defense, Cyber Vision and IOS XE UTD; no workarounds.
- Published: Oct 27, 2026, 1:51 PM EDT
- Updated: Oct 27, 2026, 1:51 PM EDT
- Category: Exploits
- Primary topic: Cisco
- Authors: Theo Martin
- Read time: 3 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

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