Is CVE-2021-45623 in the CISA KEV catalog?

No. CVE-2021-45623 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-45623?

CVE-2021-45623 has a CVSS v3 base score of 8.3 (HIGH).

What is the EPSS score for CVE-2021-45623?

CVE-2021-45623 has an EPSS score of 1.69% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-45623?

Upgrade r7800 firmware to 1.0.2.74 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-45623

HIGHEPSS 74th pctl

8.3

CVSS v3

NVD

Description

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects R7800 before 1.0.2.74, R9000 before 1.0.5.2, and XR500 before 2.3.2.66.

CWE-77Command Injection

How to fix

Remediation Available

r7800 firmwareNVD

Affected:< 1.0.2.74Fixed in:1.0.2.74CVE-2021-45623derived from NVD

r9000 firmwareNVD

Affected:< 1.0.5.2Fixed in:1.0.5.2CVE-2021-45623derived from NVD

xr500 firmwareNVD

Affected:< 2.3.2.66Fixed in:2.3.2.66CVE-2021-45623derived 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

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityLow

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

Exploit Intelligence

1.69%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% 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.