Is CVE-2019-20666 in the CISA KEV catalog?

No. CVE-2019-20666 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20666?

CVE-2019-20666 has a CVSS v3 base score of 4.8 (MEDIUM).

What is the EPSS score for CVE-2019-20666?

CVE-2019-20666 has an EPSS score of 0.56% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20666?

Upgrade rbk50 firmware to 2.3.5.30 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-20666

MEDIUM

4.8

CVSS v3

NVD

Description

Certain NETGEAR devices are affected by stored XSS. This affects RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, and RBK50 before 2.3.5.30.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

rbk50 firmwareNVD

Affected:< 2.3.5.30Fixed in:2.3.5.30CVE-2019-20666derived from NVD

rbr50 firmwareNVD

Affected:< 2.3.5.30Fixed in:2.3.5.30CVE-2019-20666derived from NVD

rbs50 firmwareNVD

Affected:< 2.3.5.30Fixed in:2.3.5.30CVE-2019-20666derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

0.56%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Vendor Advisory1

kb.netgear.com

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.