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CVE Record

CVE-2019-20660: 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

This is a stored cross-site scripting issue in specific NETGEAR Orbi WiFi systems. A highly privileged local attacker could affect sensitive data or settings through the device management interface. The listed impact is meaningful, but exposure is narrower than an internet-reachable remote flaw.

Executive priority

Treat this as a moderate-priority network device hygiene issue. Patch affected systems during the next maintenance window, faster for sensitive sites or weakly segmented networks.

Technical view

CVE-2019-20660 affects listed RBR/RBS/RBK20, 40, and 50 models before fixed firmware versions. CVSS 3.0 is 6.0 with AV:L, AC:L, PR:H, UI:N, C:H, I:H, A:N. No CWE is listed in the provided record.

Likely exposure

Exposure is likely limited to environments with affected NETGEAR systems running firmware below the versions named in the advisory. Risk is highest where administrative access or local management networks are weakly controlled.

Exploitation context

The source bundle does not identify active exploitation, and the CVE is not marked KEV. The CVSS vector requires local access and high privileges, which narrows likely exploitation compared with unauthenticated remote vulnerabilities.

Researcher notes

Evidence is limited to the CVE record and NETGEAR advisory. Do not assume broader NETGEAR product impact, active exploitation, or additional mitigations beyond vendor guidance from the provided sources.

Mitigation direction

  • Update affected NETGEAR devices to the fixed firmware versions or later named by NETGEAR.
  • Check NETGEAR advisory guidance before applying compensating controls or deployment changes.
  • Restrict device administration to trusted management networks and authorized administrators.
  • Remove or replace unsupported affected devices if current firmware cannot be applied.

Validation and detection

  • Inventory NETGEAR RBR20, RBS20, RBK20, RBR40, RBS40, RBK40, RBR50, RBS50, and RBK50 devices.
  • Compare installed firmware against 2.3.5.26 for 20-series and 2.3.5.30 for 40/50-series devices.
  • Confirm administrative interfaces are not broadly reachable from untrusted local networks.
  • Document updated firmware versions and exceptions requiring risk acceptance.
Prepared
Confidence
high
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-2019-20660 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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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-2019-20660Attack 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.