Security readout for executives and security teams
Plain-English summary
CVE-2019-20732 is a NETGEAR router, gateway, and extender issue where an already authenticated user could inject operating-system commands. Business risk is mainly from compromised, shared, or weak administrator access on affected firmware, with confidentiality impact rated high in CVSS.
Executive priority
Treat this as a moderate infrastructure hygiene issue. It is not reported as actively exploited in the provided sources, but affected edge devices with weak admin controls can create meaningful exposure. Prioritize inventory, firmware updates, and removal of obsolete devices.
Technical view
The source describes post-authentication command injection across multiple NETGEAR D, EX, R, WNDR, WN, and WNR models before specific firmware versions. CVSS 3.0 is 5.6 with local attack vector, high privileges required, no user interaction, high confidentiality impact, and low integrity and availability impact.
Likely exposure
Exposure is likely limited to organizations still operating the listed NETGEAR devices on firmware below the fixed versions. Internet-facing management is not stated in the provided sources, so do not assume remote unauthenticated exposure from this bundle alone.
Exploitation context
The bundle does not cite CISA KEV inclusion or any source confirming active exploitation. Exploitation requires an authenticated user according to the description, and the CVSS vector indicates high privileges and local attack vector. Evidence is incomplete on exploit availability and real-world abuse.
Researcher notes
The affected range is unusually broad and model-specific. The source bundle provides firmware thresholds but no exploit detail, CWE mapping, or vendor mitigation text beyond the advisory reference. Avoid broad claims about remote exploitation unless confirmed elsewhere.
Mitigation direction
- Identify listed NETGEAR models and their current firmware versions.
- Upgrade affected devices to the NETGEAR fixed firmware versions or later.
- Check the NETGEAR advisory for model-specific remediation guidance.
- Remove or replace devices that cannot be updated securely.
- Review administrative access to affected devices during remediation.
Validation and detection
- Inventory NETGEAR routers, gateways, and extenders against the affected model list.
- Compare firmware versions with the fixed-version thresholds in the CVE description.
- Confirm updated devices report firmware at or above the fixed versions.
- Verify only expected administrators retain device management access.
- Document any affected devices awaiting vendor guidance or replacement.
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-2019-20732 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
- 5.6 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:L/C:H/I:L/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:L/A:L/C:H/I:L/PR:H/S:U/UI:N0.84.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.6MediumVector: CVSS:3.0/AC:L/AV:L/A:L/C:H/I:L/PR:H/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000061195/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2228CVE 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.