Firetruck

CVE-2020-3259

KEV · Ransomware
Updated Aug 12, 2026 · PUBLISHED
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Description

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an information disclosure vulnerability. An attacker could retrieve memory contents on an affected device, which could lead to the disclosure of confidential information due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. This vulnerability affects only specific AnyConnect and WebVPN configurations.

Full record on cve.org →

Affected packages

PackageVendor / ProductVersion rangeStatus
adaptive_security_appliance_softwarecisco / adaptive_security_appliance_software>= 9.10, < 9.10.1.40affected
adaptive_security_appliance_softwarecisco / adaptive_security_appliance_software>= 9.12, < 9.12.3.9affected
adaptive_security_appliance_softwarecisco / adaptive_security_appliance_software>= 9.13, < 9.13.1.10affected
adaptive_security_appliance_softwarecisco / adaptive_security_appliance_software>= 9.8, < 9.8.4.20affected
adaptive_security_appliance_softwarecisco / adaptive_security_appliance_software>= 9.9, < 9.9.2..67affected
Cisco Adaptive Security Appliance (ASA) SoftwareCisco / Cisco Adaptive Security Appliance (ASA) Softwaren/aaffected
firepower_threat_defensecisco / firepower_threat_defense>= 6.2.3, < 6.2.3.16affected
firepower_threat_defensecisco / firepower_threat_defense>= 6.3.0, < 6.3.0.6affected
firepower_threat_defensecisco / firepower_threat_defense>= 6.4.0, < 6.4.0.9affected
firepower_threat_defensecisco / firepower_threat_defense>= 6.5.0, < 6.5.0.5affected