CVE-2016-6366

Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users to execute arbitrary code via crafted IPv4 SNMP packets, aka Bug ID CSCva92151 or EXTRABACON.

• CWE-120
• CWE-120

• http://blogs.cisco.com/security/shadow-brokersExploit, Press/Media Coverage, Vendor Advisory
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817-asa-snmpVendor Advisory
• http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516Vendor Advisory
• http://www.securityfocus.com/bid/92521Broken Link, Not Applicable, Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1036637Broken Link, Third Party Advisory, VDB Entry
• https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/40258.zipBroken Link, Exploit
• https://www.exploit-db.com/exploits/40258/Third Party Advisory, VDB Entry
• https://zerosum0x0.blogspot.com/2016/09/reverse-engineering-cisco-asa-for.htmlExploit, Technical Description
• http://blogs.cisco.com/security/shadow-brokersExploit, Press/Media Coverage, Vendor Advisory
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817-asa-snmpVendor Advisory
• http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516Vendor Advisory
• http://www.securityfocus.com/bid/92521Broken Link, Not Applicable, Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1036637Broken Link, Third Party Advisory, VDB Entry
• https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/40258.zipBroken Link, Exploit
• https://www.exploit-db.com/exploits/40258/Third Party Advisory, VDB Entry
• https://zerosum0x0.blogspot.com/2016/09/reverse-engineering-cisco-asa-for.htmlExploit, Technical Description
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-6366US Government Resource

Published

Aug 18, 2016

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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