Is CVE-2021-45520 in the CISA KEV catalog?

No. CVE-2021-45520 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-45520?

CVE-2021-45520 has a CVSS v3 base score of 9.6 (CRITICAL).

What is the EPSS score for CVE-2021-45520?

CVE-2021-45520 has an EPSS score of 0.41% (33th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-45520?

Upgrade rbk352 firmware to 4.4.0.10 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-45520

CRITICAL

9.6

CVSS v3

NVD

Description

Certain NETGEAR devices are affected by a hardcoded password. This affects RBK352 before 4.4.0.10, RBR350 before 4.4.0.10, and RBS350 before 4.4.0.10.

CWE-798Hard-coded Credentials

How to fix

Remediation Available

rbk352 firmwareNVD

Affected:< 4.4.0.10Fixed in:4.4.0.10CVE-2021-45520derived from NVD

rbr350 firmwareNVD

Affected:< 4.4.0.10Fixed in:4.4.0.10CVE-2021-45520derived from NVD

rbs350 firmwareNVD

Affected:< 4.4.0.10Fixed in:4.4.0.10CVE-2021-45520derived 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 VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.41%probability of exploitation in 30 days

33rdpercentile

Low risk: more likely to be exploited than 33% of all known CVEs.

References

Patch1

kb.netgear.com

Related Vulnerabilities

Other CWE-798 (Hard-coded Credentials) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-26138	Critical	9.8	98%	KEV	-
CVE-2024-3272	Critical	9.8	98%	KEV	-
CVE-2025-30406	Critical	9.0	94%	KEV	Fix
CVE-2024-28987	Critical	9.1	93%	KEV	Fix
CVE-2019-15976	Critical	9.8	93%	-	Fix
CVE-2024-20439	Critical	9.8	92%	KEV	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.