Medium severity5.3NVD Advisory· Published Oct 21, 2020· Updated Aug 11, 2026

CVE-2020-3578

Description

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access rule and access parts of the WebVPN portal that are supposed to be blocked. The vulnerability is due to insufficient validation of URLs when portal access rules are configured. An attacker could exploit this vulnerability by accessing certain URLs on the affected device.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./Secure Firewall Threat Defense
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
Range: >=6.4.0,<6.4.0.10
Cisco Systems, Inc./Cisco Adaptive Security Appliance
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
Range: <9.6.4.45
Cisco Systems, Inc./Firepower Threat Defense Software2 versions
cpe:2.3:o:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*range: <6.3.0.6
- (no CPE)
Cisco Systems, Inc./Adaptive Security Appliance (ASA) Softwarellm-fuzzy
Cisco Systems, Inc./Adaptive Security Appliance Cx Context Aware Security Softwarecpe-rescue
Range: n/a

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-rule-bypass-P73ABNWQnvdPatchVendor Advisory

News mentions

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