CVE intelligence and bounded remediation

CVE-2016-6366 — Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability

High CVSS 8.8 CISA KEV

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.

Severity
High
CVSS
8.8 (3.1)
Published
2016-08-18
CISA KEV
Known exploited
Ecosystem
operating-system
Weaknesses
CWE-120

Affected products

  • cisco / pix_firewall_software
  • cisco / adaptive_security_appliance_software
  • cisco / asa_1000v_cloud_firewall_software / 8.7.1
  • cisco / asa_1000v_cloud_firewall_software / 8.7.1.1

Showing 4 representative product identities from 10 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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