Security readout for executives and security teams
Plain-English summary
This flaw affects several NETGEAR gateways and extenders. A victim who is tricked into interacting with malicious content could cause browser-based actions against a vulnerable device, potentially changing settings or exposing sensitive configuration without the attacker logging in.
Executive priority
Treat this as a high-priority network edge hygiene issue. Prioritize owned NETGEAR gateway and extender inventory, firmware updates, and replacement planning for devices that cannot be brought to the fixed versions.
Technical view
CVE-2019-20691 is a CSRF issue in specified NETGEAR D-series gateways and EX/WN extenders before listed firmware versions. The CVSS 3.0 vector is AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L, meaning network reachability, low complexity, no privileges, and required user interaction.
Likely exposure
Exposure is limited to organizations or homes running the named NETGEAR models on firmware older than the fixed versions in the advisory. Internet exposure is not required for CSRF, but attacker success depends on a user reaching attacker-controlled content while able to access the device management interface.
Exploitation context
The supplied sources do not report active exploitation, and the CVE is not marked as CISA KEV. The risk is still material because CSRF can abuse a trusted browser session to affect device administration when user interaction occurs.
Researcher notes
The record provides affected model/version thresholds but little implementation detail and no CWE mapping. Validation should focus on authenticated inventory and firmware comparison, not intrusive testing. Do not assume exploit availability or broader NETGEAR impact beyond the listed models.
Mitigation direction
- Inventory the listed NETGEAR gateway and extender models in use.
- Upgrade affected devices to the fixed firmware versions named by NETGEAR.
- Use NETGEAR’s advisory and support downloads for model-specific firmware guidance.
- If updates are unavailable, follow vendor guidance and consider replacing unsupported devices.
- Limit who can access device administration interfaces until remediation is complete.
Validation and detection
- Confirm each device model and current firmware version.
- Compare installed firmware with the fixed-version thresholds in the CVE description.
- Review NETGEAR advisory PSV-2017-2747 for model-specific applicability.
- Document devices that cannot be updated and assign replacement or exception ownership.
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-2019-20691 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
- High
- CVSS
- 8.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:N/A:L/C:H/I:H/PR:N/S:U/UI:R
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:N/A:L/C:H/I:H/PR:N/S:U/UI:R2.85.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.3HighVector: CVSS:3.0/AC:L/AV:N/A:L/C:H/I:H/PR:N/S:U/UI:R
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000061448/Security-Advisory-for-Cross-Site-Request-Forgery-on-Some-Gateways-and-Extenders-PSV-2017-2747CVE 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.