Security readout for executives and security teams
This is a serious Cisco firewall vulnerability. An attacker with SNMP access could send crafted IPv4 SNMP traffic and potentially run code on affected ASA-family devices. Because CISA lists CVE-2016-6366 as known exploited, exposed or poorly restricted management access should be treated as urgent. Exposure is most likely where affected Cisco ASA-family devices run vulnerable software and have SNMP enabled and reachable by users or systems beyond a tightly controlled management plane. Treat this as a high-priority firewall remediation item, especially for perimeter or shared-security infrastructure. KEV status means delayed remediation increases business risk. Mitigation focus: Upgrade affected Cisco devices to a fixed release identified by Cisco guidance.; Restrict SNMP access to trusted management hosts only.; Disable SNMP where it is not operationally required..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2016-6366 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/40258.zipCVE reference · x_refsource_MISC
- https://zerosum0x0.blogspot.com/2016/09/reverse-engineering-cisco-asa-for.htmlCVE reference · x_refsource_MISC
- 40258CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-6366CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.