Security readout for executives and security teams
Plain-English summary
This flaw lets a highly privileged, authenticated user inject commands on listed NETGEAR routers. It is not a drive-by internet bug in the provided data, but compromise could seriously affect router confidentiality and integrity.
Executive priority
Treat as a planned but important network-edge remediation. Prioritize devices used in offices, remote sites, or shared networks where privileged router access may be exposed beyond trusted administrators.
Technical view
CVE-2019-20659 is a post-authentication command injection issue affecting specific NETGEAR router firmware versions. The CVSS vector indicates adjacent-network access, low attack complexity, high privileges required, no user interaction, and high confidentiality and integrity impact.
Likely exposure
Exposure is limited to listed NETGEAR models running older firmware: R6400v2, R6700, R6700v3, R6900, and R7900. Risk is higher where router administration is reachable by untrusted users on the local or adjacent network.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. Exploitation requires authentication with high privileges, but successful command injection on a router can enable serious device compromise.
Researcher notes
Affected metadata in the bundle is generic, but the CVE description names models and fixed thresholds. No CWE or vulnerable endpoint details are provided, so validation should focus on model, firmware, privilege boundaries, and vendor advisory alignment.
Mitigation direction
- Update affected NETGEAR routers to the fixed firmware versions or later.
- Use the NETGEAR advisory to confirm exact firmware for each model.
- Restrict router administration to trusted management networks and users.
- Review router accounts and remove unnecessary privileged access.
Validation and detection
- Inventory the listed NETGEAR router models in use.
- Compare installed firmware against the fixed version thresholds.
- Confirm administrative interfaces are not reachable from untrusted networks.
- Check vendor guidance for any model-specific remediation details.
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.
Execution 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-2019-20659 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
- 6.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:L/C:H/I:H/PR:H/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:L/C:H/I:H/PR:H/S:U/UI:N0.95.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.4MediumVector: CVSS:3.0/AC:L/AV:A/A:L/C:H/I:H/PR:H/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000061480/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-PSV-2018-0567CVE 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.