Is CVE-2021-45543 in the CISA KEV catalog?

No. CVE-2021-45543 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-45543?

CVE-2021-45543 has a CVSS v3 base score of 8.4 (HIGH).

What is the EPSS score for CVE-2021-45543?

CVE-2021-45543 has an EPSS score of 0.64% (46th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-45543?

Upgrade r8000 firmware to 1.0.4.74 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2021-45543

HIGH

8.4

CVSS v3

NVD

Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects R8000 before 1.0.4.74, RAX200 before 1.0.4.120, R8000P before 1.4.2.84, R7900P before 1.4.2.84, RBR850 before 3.2.17.12, RBS850 before 3.2.17.12, and RBK852 before 3.2.17.12.

CWE-77Command Injection

How to fix

Remediation Available

r8000 firmwareNVD

Affected:< 1.0.4.74Fixed in:1.0.4.74CVE-2021-45543derived from NVD

r8000p firmwareNVD

Affected:< 1.4.2.84Fixed in:1.4.2.84CVE-2021-45543derived from NVD

rax200 firmwareNVD

Affected:< 1.0.4.120Fixed in:1.0.4.120CVE-2021-45543derived from NVD

rbk852 firmwareNVD

Affected:< 3.2.17.12Fixed in:3.2.17.12CVE-2021-45543derived from NVD

rbr850 firmwareNVD

Affected:< 3.2.17.12Fixed in:3.2.17.12CVE-2021-45543derived from NVD

rbs850 firmwareNVD

Affected:< 3.2.17.12Fixed in:3.2.17.12CVE-2021-45543derived 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 RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.64%probability of exploitation in 30 days

46thpercentile

Moderate risk: more likely to be exploited than 46% of all known CVEs.

References

Patch1

kb.netgear.com

Related Vulnerabilities

Other CWE-77 (Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2024-21887	Critical	9.1	100%	KEV + Ransom	-
CVE-2023-1671	Critical	9.8	100%	KEV	Fix
CVE-2023-1389	High	8.8	100%	KEV	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2012-1823	Critical	9.8	100%	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.