CVE-2016-6366
HIGHCISA KEVEPSS 100th pctlDescription
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.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability
A buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) code of Cisco ASA software could allow an attacker to cause a reload of the affected system or to remotely execute code.
Apply updates per vendor instructions.
Remediation due: 2022-06-14
References
- http://blogs.cisco.com/security/shadow-brokers
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817-asa-snmp
- http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516
- http://www.securityfocus.com/bid/92521
- http://www.securitytracker.com/id/1036637
- https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/40258.zip
- https://www.exploit-db.com/exploits/40258/
- https://zerosum0x0.blogspot.com/2016/09/reverse-engineering-cisco-asa-for.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-6366
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.