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Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software sftunnel Vulnerabilities

Cisco Security Advisories ()1
Part of a story covered by 15 sourcesCisco Secure Firewall Adaptive Security Appliance, Secure Firewall Threat Defense, and Secure Firewall Management Center Software Hardening Release: September 2026Merged summary & timeline
AI summary · glm-5.3-flashSummaries by Vani AI

Cisco fixed sftunnel flaws in Secure Firewall Management Center and Threat Defense allowing unauthenticated authentication bypass or denial of service.

Multiple vulnerabilities in Cisco Secure Firewall Management Center (FMC) and Secure Firewall Threat Defense (FTD) software could allow an unauthenticated attacker to bypass sftunnel authentication or mount a sftunnel denial-of-service attack. Cisco has released software updates addressing these vulnerabilities. No workarounds are available. The advisory is part of a grouped Cisco release.

Key facts
  • Unauthenticated sftunnel authentication bypass affects FMC and FTD
  • sftunnel denial-of-service variant also patched
  • Fixes released; no workarounds available
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From the original article

Multiple vulnerabilities in Cisco Secure Firewall Management Center (FMC) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated attacker to perform an sftunnel authentication bypass or sftunnel denial of service (DoS) attack. For more information about these vulnerabilities, see the Details section of this advisory.

Cisco Security Advisories

sec.cloudapps.cisco.com

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