Security readout for executives and security teams
Plain-English summary
This CVE describes a NETGEAR cable modem and gateway issue that can cause affected devices to slow down or stop. The public record names four models and pre-2017-05-30 builds, but provides no severity score or technical root cause.
Executive priority
Treat this as an operational availability cleanup item, especially for legacy network edge equipment. Prioritize validation where affected devices support business connectivity or remote work, but avoid emergency framing because severity and exploitation evidence are incomplete.
Technical view
CVE-2017-18859 is an availability issue affecting NETGEAR C6300, CM400, CM700, and CMD31T before 2017-05-30. The source bundle does not provide CWE, CVSS, attack vector, prerequisites, exploit mechanics, or a named patch version.
Likely exposure
Exposure appears limited to the named NETGEAR cable modem and gateway models running builds before 2017-05-30. Legacy branch offices, home offices, labs, or unmanaged network edges are most likely to retain these devices.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not listed as KEV in the supplied bundle. Evidence supports an availability risk, not confirmed compromise, data theft, or code execution.
Researcher notes
The public bundle is sparse. It identifies affected models and date threshold only. Further analysis depends on the NETGEAR advisory and device firmware history; do not infer exploitability, root cause, or remediation details beyond cited sources.
Mitigation direction
- Inventory NETGEAR C6300, CM400, CM700, and CMD31T devices.
- Compare firmware or build date with the 2017-05-30 cutoff.
- Check NETGEAR advisory PSV-2017-2165 for vendor-approved remediation.
- Replace unsupported or unmanaged affected devices.
- Monitor affected sites for recurring modem slowdown or stoppage.
Validation and detection
- Confirm device model from asset records or device administration pages.
- Record firmware version and build date for each device.
- Map findings to the affected pre-2017-05-30 condition.
- Confirm remediation status against NETGEAR advisory PSV-2017-2165.
- Track post-remediation availability and service interruptions.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2017-18859 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000038560/Security-Advisory-for-Vulnerability-on-Select-Cable-Modems-and-Gateways-PSV-2017-2165CVE reference · x_refsource_CONFIRM
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.