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Advisory severityCritical9.9Cisco Exploited

Critical [CVE-2026-20329 +7] Cisco Secure Firewall Adaptive Security Appliance, Secure Firewall Threat Defense, and Secure Firewall Management Center Software Hardening Release: September 2026

This critical-severity Cisco advisory covers CVE-2026-20329 and CVE-2026-20330 and 6 more CVEs affecting Secure Firewall Management Center (FMC), Secure Firewall Threat Defense (FTD) Software, Secure Firewall Adaptive Security Appliance (ASA) Software.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 8 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.

cisco-sa-hardening-asaftdfmc-uvpPROhN Source published Source updated

VulniPulse record published Record updated

CVE-2026-20329CVE-2026-20330CVE-2026-20331CVE-2026-20332CVE-2026-20333CVE-2026-20334CVE-2026-20335CVE-2026-20336
Affected products & platforms
CiscoFirewallASA / Firepower
Open source advisory

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Summary

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software and Cisco Secure Firewall Management Center (FMC) Software engineering team has conducted a comprehensive internal security review.

This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.

These vulnerabilities were found during internal testing. Two of them are known to be actively exploited.

For more information, see the following advisories: Cisco Secure Firewall Management Center Software Static Credential Vulnerability and Cisco Secure Firewall Management Center Software Authentication Bypass Vulnerability.

To assist customers in patching and to streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class — Common Weakness Enumeration (CWE) — and assigned a single Common Vulnerabilities and Exposures Identifier (CVE ID) to each CWE grouping.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

This advisory is part of a group of advisories. For a complete list of the advisories and links to them, see Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.

Affected versions
  • Scope: These vulnerabilities affect the following Cisco products, regardless of device configuration:
  • Release N/A (first fixed: 9.16 and earlier / 9.18)
  • Release 9.18.4.94 (first fixed: 9.18.4.135 / 9.20.4.235)
  • Release 9.22 (first fixed: 9.20.4.49 / 9.22.3.26)
  • Release 9.23.1.195 (first fixed: 9.23 / 9.23.1.47)
  • Release 9.24.1.155 (first fixed: 9.24 / 9.24.1.26)
  • Release 7.0 and earlier (first fixed: 7.0.10)
  • Release 7.2 (first fixed: 7.2.12)
  • Release 7.4 (first fixed: 7.4.8)
  • Release 7.6 (first fixed: 7.6.6)
  • Release 7.7 (first fixed: 7.7.13)
  • Release 10.0 (first fixed: 10.0.2)
  • Release 10.1 (first fixed: 10.1.0)

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Fixed versions
  • 9.16 and earlier / 9.18
  • 9.18.4.135 / 9.20.4.235
  • 9.20.4.49 / 9.22.3.26
  • 9.23 / 9.23.1.47
  • 9.24 / 9.24.1.26
  • 7.0.10
  • 7.2.12
  • 7.4.8
  • 7.6.6
  • 7.7.13
  • 10.0.2
  • 10.1.0

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
  • Release N/A: upgrade to 9.16 and earlier / 9.18.
  • Release 9.18.4.94: upgrade to 9.18.4.135 / 9.20.4.235.
  • Release 9.22: upgrade to 9.20.4.49 / 9.22.3.26.
  • Release 9.23.1.195: upgrade to 9.23 / 9.23.1.47.
  • Release 9.24.1.155: upgrade to 9.24 / 9.24.1.26.
  • Release 7.0 and earlier: upgrade to 7.0.10.
  • Release 7.2: upgrade to 7.2.12.
  • Release 7.4: upgrade to 7.4.8.
Workaround status
  • There are no workarounds that address these vulnerabilities.

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

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