CVE & CISA-KEV Catalog

CVE-2018-21196

MEDIUM
6.8
CVSS v3
NVD

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R6100 before 1.0.1.20, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.92, WNDR4300 before 1.0.2.94, and WNR2000v5 before 1.0.0.62.

CWE-787Out-of-bounds Write

How to fix

Remediation Available
d6100 firmwareNVD
Affected:< 1.0.0.57Fixed in:1.0.0.57CVE-2018-21196derived from NVD
r6100 firmwareNVD
Affected:< 1.0.1.20Fixed in:1.0.1.20CVE-2018-21196derived from NVD
r7800 firmwareNVD
Affected:< 1.0.2.40Fixed in:1.0.2.40CVE-2018-21196derived from NVD
r9000 firmwareNVD
Affected:< 1.0.2.52Fixed in:1.0.2.52CVE-2018-21196derived from NVD
wndr3700 firmwareNVD
Affected:< 1.0.2.92Fixed in:1.0.2.92CVE-2018-21196derived from NVD
wndr4300 firmwareNVD
Affected:< 1.0.2.94Fixed in:1.0.2.94CVE-2018-21196derived from NVD
wnr2000 firmwareNVD
Affected:< 1.0.0.62Fixed in:1.0.0.62CVE-2018-21196derived 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
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.57%probability of exploitation in 30 days
43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-22457Critical9.0100%KEV + RansomFix
CVE-2025-0282Critical9.0100%KEV + Ransom-
CVE-2015-3113Critical9.8100%KEVFix
CVE-2021-20038Critical9.8100%KEV + Ransom-
CVE-2023-4863High8.8100%KEVFix
CVE-2020-16040Medium6.5100%-Fix
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Markdown

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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.