CVE-2026-20334

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20334 are related to issues concerning improper adherence to coding standards that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-710.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.7 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-asaftdfmc-uvpPROhN

Configurations

No configuration.

History

16 Sep 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-16 21:17

Updated : 2026-09-18 20:17

NVD link : CVE-2026-20334

Mitre link : CVE-2026-20334

CVE.ORG link : CVE-2026-20334

JSON object : View

Products Affected

No product.

CWE

CWE-710

Improper Adherence to Coding Standards

{"id": "CVE-2026-20334", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20334", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-17T03:57:42.844373Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@cisco.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.7}]}, "affected": [{"source": "psirt@cisco.com", "affectedData": [{"vendor": "Cisco", "product": "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software", "versions": [{"status": "affected", "version": "9.16.1"}, {"status": "affected", "version": "9.16.1.28"}, {"status": "affected", "version": "9.16.2"}, {"status": "affected", "version": "9.16.2.3"}, {"status": "affected", "version": "9.16.2.7"}, {"status": "affected", "version": "9.16.2.11"}, {"status": "affected", "version": "9.16.2.13"}, {"status": "affected", "version": "9.16.2.14"}, {"status": "affected", "version": "9.16.3.3"}, {"status": "affected", "version": "9.16.3"}, {"status": "affected", "version": "9.16.3.14"}, {"status": "affected", "version": "9.16.3.15"}, {"status": "affected", "version": "9.18.1.3"}, {"status": "affected", "version": "9.18.2"}, {"status": "affected", "version": "9.16.3.19"}, {"status": "affected", "version": "9.16.3.23"}, {"status": "affected", "version": "9.18.2.5"}, {"status": "affected", "version": "9.16.4"}, {"status": "affected", "version": "9.18.2.7"}, {"status": "affected", "version": "9.16.4.9"}, {"status": "affected", "version": "9.18.2.8"}, {"status": "affected", "version": "9.16.4.14"}, {"status": "affected", "version": "9.18.3"}, {"status": "affected", "version": "9.16.4.18"}, {"status": "affected", "version": "9.18.3.39"}, {"status": "affected", "version": "9.16.4.19"}, {"status": "affected", "version": "9.18.3.46"}, {"status": "affected", "version": "9.16.4.27"}, {"status": "affected", "version": "9.18.3.53"}, {"status": "affected", "version": "9.18.3.55"}, {"status": "affected", "version": "9.16.4.38"}, {"status": "affected", "version": "9.16.4.39"}, {"status": "affected", "version": "9.18.3.56"}, {"status": "affected", "version": "9.20.1"}, {"status": "affected", "version": "9.16.4.42"}, {"status": "affected", "version": "9.18.4"}, {"status": "affected", "version": "9.20.1.5"}, {"status": "affected", "version": "9.18.4.5"}, {"status": "affected", "version": "9.16.4.48"}, {"status": "affected", "version": "9.18.4.8"}, {"status": "affected", "version": "9.20.2"}, {"status": "affected", "version": "9.16.4.55"}, {"status": "affected", "version": "9.18.4.22"}, {"status": "affected", "version": "9.20.2.10"}, {"status": "affected", "version": "9.16.4.57"}, {"status": "affected", "version": "9.18.4.24"}, {"status": "affected", "version": "9.20.2.21"}, {"status": "affected", "version": "9.16.4.61"}, {"status": "affected", "version": "9.18.4.29"}, {"status": "affected", "version": "9.20.2.22"}, {"status": "affected", "version": "9.16.4.62"}, {"status": "affected", "version": "9.18.4.34"}, {"status": "affected", "version": "9.20.3"}, {"status": "affected", "version": "9.16.4.67"}, {"status": "affected", "version": "9.16.4.70"}, {"status": "affected", "version": "9.18.4.40"}, {"status": "affected", "version": "9.23.1"}, {"status": "affected", "version": "9.22.1.1"}, {"status": "affected", "version": "9.16.4.71"}, {"status": "affected", "version": "9.20.3.4"}, {"status": "affected", "version": "9.18.4.47"}, {"status": "affected", "version": "9.20.3.7"}, {"status": "affected", "version": "9.16.4.76"}, {"status": "affected", "version": "9.20.3.9"}, {"status": "affected", "version": "9.18.4.50"}, {"status": "affected", "version": "9.22.1.3"}, {"status": "affected", "version": "9.20.3.10"}, {"status": "affected", "version": "9.22.1.2"}, {"status": "affected", "version": "9.18.4.52"}, {"status": "affected", "version": "9.20.3.13"}, {"status": "affected", "version": "9.22.1.6"}, {"status": "affected", "version": "9.18.4.53"}, {"status": "affected", "version": "9.16.4.82"}, {"status": "affected", "version": "9.22.2"}, {"status": "affected", "version": "9.20.3.16"}, {"status": "affected", "version": "9.19.1.42"}, {"status": "affected", "version": "9.18.4.57"}, {"status": "affected", "version": "9.16.4.84"}, {"status": "affected", "version": "9.23.1.3"}, {"status": "affected", "version": "9.20.3.20"}, {"status": "affected", "version": "9.22.2.4"}, {"status": "affected", "version": "9.23.1.7"}, {"status": "affected", "version": "9.20.4"}, {"status": "affected", "version": "9.22.2.9"}, {"status": "affected", "version": "9.23.1.13"}, {"status": "affected", "version": "9.20.4.7"}, {"status": "affected", "version": "9.22.2.13"}, {"status": "affected", "version": "9.18.4.66"}, {"status": "affected", "version": "9.20.4.10"}, {"status": "affected", "version": "9.23.1.19"}, {"status": "affected", "version": "9.16.4.85"}, {"status": "affected", "version": "9.22.2.14"}, {"status": "affected", "version": "9.18.4.67"}, {"status": "affected", "version": "9.24.1"}, {"status": "affected", "version": "9.18.4.68"}, {"status": "affected", "version": "9.23.1.22"}, {"status": "affected", "version": "9.20.4.14"}, {"status": "affected", "version": "9.22.2.20"}, {"status": "affected", "version": "9.18.4.71"}, {"status": "affected", "version": "9.20.4.19"}, {"status": "affected", "version": "9.23.1.26"}, {"status": "affected", "version": "9.16.4.89"}, {"status": "affected", "version": "9.22.2.32"}, {"status": "affected", "version": "9.18.4.76"}, {"status": "affected", "version": "9.22.3"}, {"status": "affected", "version": "9.24.1.5"}, {"status": "affected", "version": "9.20.4.22"}, {"status": "affected", "version": "9.24.1.9"}, {"status": "affected", "version": "9.20.4.28"}, {"status": "affected", "version": "9.22.3.5"}, {"status": "affected", "version": "9.16.4.92"}, {"status": "affected", "version": "9.18.4.135"}, {"status": "affected", "version": "9.23.1.195"}, {"status": "affected", "version": "9.20.4.30"}, {"status": "affected", "version": "9.24.1.155"}, {"status": "affected", "version": "9.23.1.32"}, {"status": "affected", "version": "9.24.1.11"}, {"status": "affected", "version": "9.20.4.34"}, {"status": "affected", "version": "9.18.4.82"}, {"status": "affected", "version": "9.24.10"}, {"status": "affected", "version": "9.20.4.235"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco Secure Firewall Management Center (FMC)", "versions": [{"status": "affected", "version": "7.0.0"}, {"status": "affected", "version": "7.0.0.1"}, {"status": "affected", "version": "7.0.1"}, {"status": "affected", "version": "7.0.1.1"}, {"status": "affected", "version": "7.0.2"}, {"status": "affected", "version": "7.2.0"}, {"status": "affected", "version": "7.0.2.1"}, {"status": "affected", "version": "7.0.3"}, {"status": "affected", "version": "7.2.0.1"}, {"status": "affected", "version": "7.0.4"}, {"status": "affected", "version": "7.2.1"}, {"status": "affected", "version": "7.0.5"}, {"status": "affected", "version": "7.3.0"}, {"status": "affected", "version": "7.2.2"}, {"status": "affected", "version": "7.3.1"}, {"status": "affected", "version": "7.2.3"}, {"status": "affected", "version": "7.2.3.1"}, {"status": "affected", "version": "7.2.4"}, {"status": "affected", "version": "7.0.6"}, {"status": "affected", "version": "7.2.4.1"}, {"status": "affected", "version": "7.2.5"}, {"status": "affected", "version": "7.3.1.1"}, {"status": "affected", "version": "7.4.0"}, {"status": "affected", "version": "7.0.6.1"}, {"status": "affected", "version": "7.2.5.1"}, {"status": "affected", "version": "7.4.1"}, {"status": "affected", "version": "7.2.6"}, {"status": "affected", "version": "7.4.1.1"}, {"status": "affected", "version": "7.0.6.2"}, {"status": "affected", "version": "7.2.7"}, {"status": "affected", "version": "7.2.5.2"}, {"status": "affected", "version": "7.3.1.2"}, {"status": "affected", "version": "7.2.8"}, {"status": "affected", "version": "7.6.0"}, {"status": "affected", "version": "7.4.2"}, {"status": "affected", "version": "7.2.8.1"}, {"status": "affected", "version": "7.0.6.3"}, {"status": "affected", "version": "7.4.2.1"}, {"status": "affected", "version": "7.2.9"}, {"status": "affected", "version": "7.0.7"}, {"status": "affected", "version": "7.7.0"}, {"status": "affected", "version": "7.4.2.2"}, {"status": "affected", "version": "7.2.10"}, {"status": "affected", "version": "7.6.1"}, {"status": "affected", "version": "7.4.2.3"}, {"status": "affected", "version": "7.0.8"}, {"status": "affected", "version": "7.6.2"}, {"status": "affected", "version": "7.7.10"}, {"status": "affected", "version": "7.2.10.1"}, {"status": "affected", "version": "7.0.8.1"}, {"status": "affected", "version": "7.6.2.1"}, {"status": "affected", "version": "7.2.10.2"}, {"status": "affected", "version": "7.7.10.1"}, {"status": "affected", "version": "7.4.2.4"}, {"status": "affected", "version": "7.4.3"}, {"status": "affected", "version": "7.6.3"}, {"status": "affected", "version": "7.7.11"}, {"status": "affected", "version": "7.6.4"}, {"status": "affected", "version": "10.0.0"}, {"status": "affected", "version": "7.4.4"}, {"status": "affected", "version": "7.4.5"}, {"status": "affected", "version": "7.0.9"}, {"status": "affected", "version": "7.2.11"}, {"status": "affected", "version": "7.7.12"}, {"status": "affected", "version": "7.6.5"}, {"status": "affected", "version": "7.4.6"}, {"status": "affected", "version": "10.0.1"}, {"status": "affected", "version": "7.4.7"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco Secure Firewall Threat Defense (FTD) Software", "versions": [{"status": "affected", "version": "7.0.0.1"}, {"status": "affected", "version": "7.0.1"}, {"status": "affected", "version": "7.0.1.1"}, {"status": "affected", "version": "7.0.2"}, {"status": "affected", "version": "7.0.2.1"}, {"status": "affected", "version": "7.0.3"}, {"status": "affected", "version": "7.0.4"}, {"status": "affected", "version": "7.0.5"}, {"status": "affected", "version": "7.3.0"}, {"status": "affected", "version": "7.3.1"}, {"status": "affected", "version": "7.0.6"}, {"status": "affected", "version": "7.3.1.1"}, {"status": "affected", "version": "7.4.0"}, {"status": "affected", "version": "7.0.6.1"}, {"status": "affected", "version": "7.4.1"}, {"status": "affected", "version": "7.0.6.2"}, {"status": "affected", "version": "7.4.1.1"}, {"status": "affected", "version": "7.3.1.2"}, {"status": "affected", "version": "7.6.0"}, {"status": "affected", "version": "7.4.2"}, {"status": "affected", "version": "7.0.6.3"}, {"status": "affected", "version": "7.4.2.1"}, {"status": "affected", "version": "7.0.7"}, {"status": "affected", "version": "7.7.0"}, {"status": "affected", "version": "7.4.2.2"}, {"status": "affected", "version": "7.6.1"}, {"status": "affected", "version": "7.4.2.3"}, {"status": "affected", "version": "7.0.8"}, {"status": "affected", "version": "7.6.2"}, {"status": "affected", "version": "7.7.10"}, {"status": "affected", "version": "7.7.11"}, {"status": "affected", "version": "7.0.8.1"}, {"status": "affected", "version": "7.6.2.1"}, {"status": "affected", "version": "7.7.10.1"}, {"status": "affected", "version": "7.4.2.4"}, {"status": "affected", "version": "7.4.3"}, {"status": "affected", "version": "7.6.4"}, {"status": "affected", "version": "10.0.0"}, {"status": "affected", "version": "7.4.4"}, {"status": "affected", "version": "7.0.9"}, {"status": "affected", "version": "7.4.7"}], "defaultStatus": "unknown"}]}], "published": "2026-09-16T21:17:10.917", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-asaftdfmc-uvpPROhN", "source": "psirt@cisco.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-710"}]}], "descriptions": [{"lang": "en", "value": "As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20334 are related to issues concerning improper adherence to coding standards that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-710."}], "lastModified": "2026-09-18T20:17:14.750", "sourceIdentifier": "psirt@cisco.com"}