CVE & CISA-KEV Catalog

CVE-2018-21111

MEDIUM
6.8
CVSS v3
NVD

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D3600 before 1.0.0.75, D6000 before 1.0.0.75, D6100 before 1.0.0.60, R7800 before 1.0.2.52, R8900 before 1.0.4.2, R9000 before 1.0.4.2, WNDR3700v4 before 1.0.2.102, WNDR4300 before 1.0.2.104, WNDR4300v2 before 1.0.0.58, WNDR4500v3 before 1.0.0.58, and WNR2000v5 before 1.0.0.66.

CWE-787Out-of-bounds Write

How to fix

Remediation Available
d3600 firmwareNVD
Affected:< 1.0.0.75Fixed in:1.0.0.75CVE-2018-21111derived from NVD
d6000 firmwareNVD
Affected:< 1.0.0.75Fixed in:1.0.0.75CVE-2018-21111derived from NVD
d6100 firmwareNVD
Affected:< 1.0.0.60Fixed in:1.0.0.60CVE-2018-21111derived from NVD
r7800 firmwareNVD
Affected:< 1.0.2.52Fixed in:1.0.2.52CVE-2018-21111derived from NVD
r8900 firmwareNVD
Affected:< 1.0.4.2Fixed in:1.0.4.2CVE-2018-21111derived from NVD
r9000 firmwareNVD
Affected:< 1.0.4.2Fixed in:1.0.4.2CVE-2018-21111derived from NVD
wndr3700 firmwareNVD
Affected:< 1.0.2.102Fixed in:1.0.2.102CVE-2018-21111derived from NVD
wndr4300 firmwareNVD
Affected:< 1.0.0.58Fixed in:1.0.0.58CVE-2018-21111derived from NVD
wndr4500 firmwareNVD
Affected:< 1.0.0.58Fixed in:1.0.0.58CVE-2018-21111derived from NVD
wnr2000 firmwareNVD
Affected:< 1.0.0.66Fixed in:1.0.0.66CVE-2018-21111derived 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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CVE-2018-21111 severity badge

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.