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CVE Record

CVE-2019-20664: Certain NETGEAR devices are affected by stored XSS.

Certain NETGEAR devices are affected by stored XSS. This affects RBR20 before 2.3.5.26, RBS20 before 2.3.5.26, RBK20 before 2.3.5.26, RBR40 before 2.3.5.30, RBS40 before 2.3.5.30, RBK40 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, and RBK50 before 2.3.5.30.

MediumCVSS 6Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2019-20664 is a stored cross-site scripting issue in listed NETGEAR Orbi WiFi systems. An attacker with the required local access and high privileges could store script content that affects the device interface, potentially exposing sensitive information or altering settings.

Executive priority

Treat as a planned remediation item unless the affected devices support sensitive networks or shared administration. Patch during the next network maintenance window and verify administrative access controls.

Technical view

The CVE describes stored XSS affecting RBR20, RBS20, RBK20 before 2.3.5.26 and RBR40, RBS40, RBK40, RBR50, RBS50, RBK50 before 2.3.5.30. CVSS 3.0 is 6.0 with local attack vector, low complexity, high privileges, no user interaction, and high confidentiality and integrity impact.

Likely exposure

Exposure is limited to organizations or homes running the named NETGEAR Orbi models on firmware older than the fixed versions. Internet-wide exposure is not established by the provided sources, and the CVSS vector indicates local access and high privileges are required.

Exploitation context

The provided sources do not report active exploitation, and the CVE is not listed as KEV. Risk is highest where vulnerable devices are managed by multiple administrators or where local privileged access to the device interface is weakly controlled.

Researcher notes

The source bundle does not include root-cause detail, vulnerable parameters, proof-of-concept material, or scanning indicators. Analysis should stay version-based and vendor-advisory-driven. Do not assume remote unauthenticated exploitability from this CVSS vector.

Mitigation direction

  • Inventory listed NETGEAR Orbi models and firmware versions.
  • Update affected 20-series devices to 2.3.5.26 or later.
  • Update affected 40-series and 50-series devices to 2.3.5.30 or later.
  • Review NETGEAR advisory guidance before changing production networks.
  • Limit administrative access to trusted users and management networks.

Validation and detection

  • Confirm device model against the affected RBR, RBS, and RBK list.
  • Record current firmware version from the device management interface.
  • Verify firmware is not below the fixed version for that model family.
  • Check vendor advisory for any model-specific remediation notes.
  • Retest administrative workflows after firmware update.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2019-20664 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AC:L/AV:L/A:N/C:H/I:H/PR:H/S:U/UI:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
6CVSS 3.0MediumCVSS:3.0/AC:L/AV:L/A:N/C:H/I:H/PR:H/S:U/UI:N0.85.2Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6Medium
CVSS 3.0 vector shape for CVE-2019-20664Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AC:L/AV:L/A:N/C:H/I:H/PR:H/S:U/UI:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.