Is CVE-2018-21132 in the CISA KEV catalog?

No. CVE-2018-21132 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-21132?

CVE-2018-21132 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-21132?

CVE-2018-21132 has an EPSS score of 1.68% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-21132?

Upgrade wac505 firmware to 5.0.0.17 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2018-21132

CRITICALEPSS 74th pctl

9.8

CVSS v3

NVD

Description

Certain NETGEAR devices are affected by authentication bypass. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.

CWE-306Missing Authentication for Critical Function

How to fix

Remediation Available

wac505 firmwareNVD

Affected:< 5.0.0.17Fixed in:5.0.0.17CVE-2018-21132derived from NVD

wac510 firmwareNVD

Affected:< 5.0.0.17Fixed in:5.0.0.17CVE-2018-21132derived 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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.68%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Vendor Advisory1

kb.netgear.com

Related Vulnerabilities

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-10271	High	7.5	100%	KEV + Ransom	-
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2022-1388	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2021-37415	Critical	9.8	100%	KEV	-
CVE-2023-21839	High	7.5	100%	KEV	-

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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.