Security readout for executives and security teams
Plain-English summary
CVE-2019-20687 is a denial-of-service flaw in specific NETGEAR routers and gateways. An attacker on an adjacent network could disrupt device availability, but the sources show no confidentiality or integrity impact. The business risk is service interruption where these older models still support network access.
Executive priority
Treat this as a moderate operational resilience issue. Prioritize remediation where affected devices support critical connectivity, remote offices, or sensitive network segments, especially if firmware is outdated or support status is unclear.
Technical view
The CVSS 3.0 vector is AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, scoring 6.5. Affected firmware is below D6200 1.1.00.34, D7000 1.0.1.70, JR6150 1.0.1.18, R6050 1.0.1.18, and WNR2020 1.1.0.62.
Likely exposure
Exposure is limited to environments still running the listed NETGEAR models below the fixed firmware versions. The CVSS adjacent-network attack vector indicates risk from nearby or same-segment network access, not necessarily remote internet exploitation.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not marked KEV. Available evidence supports a denial-of-service risk with high availability impact, but not data theft, privilege gain, or code execution.
Researcher notes
The provided data lacks CWE detail and vulnerability mechanics. Analysis should stay at impact and exposure level unless NETGEAR advisory content adds specifics. Do not infer exploitability beyond adjacent unauthenticated denial of service.
Mitigation direction
- Inventory NETGEAR D6200, D7000, JR6150, R6050, and WNR2020 devices.
- Upgrade each affected model to the fixed firmware version or later.
- Check NETGEAR’s advisory for model-specific firmware and support guidance.
- Retire unsupported affected devices if fixed firmware cannot be applied.
Validation and detection
- Confirm model numbers and firmware versions from device administration records.
- Verify no affected device runs below the fixed versions listed in the CVE.
- Review network segmentation for adjacent access to affected devices.
- Document remediation status and any remaining unsupported devices.
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-2019-20687 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
- Medium
- CVSS
- 6.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:H/C:N/I:N/PR:N/S:U/UI:N
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 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:3.0/AC:L/AV:A/A:H/C:N/I:N/PR:N/S:U/UI:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AC:L/AV:A/A:H/C:N/I:N/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000061452/Security-Advisory-for-Denial-of-Service-on-Some-Routers-and-Gateways-PSV-2018-0182CVE 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.