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01 Record

CVE-2018-21171

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R7800 before 1.0.2.40, R9000 before 1.0.3.6, WNDR3700v4 before

MediumPUBLISHEDCNA: mitre
CNA base score6.8 CVSS v3.xCVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N

02 Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R7800 before 1.0.2.40, R9000 before 1.0.3.6, WNDR3700v4 before

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.65% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.7% of scored records. A rank, not a probability.
NVD base score
6.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-04-27 17:36Z6 YR AGO
Last updated
2024-08-05 12:26Z2 YR AGO
Reserved
2020-04-20
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Medium (CVSS 6.8)
CNA CVSS vector
CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N
Weaknesses
Data version
5.1
Document digest
e30cd75b67e15cc40b5c7e5ac889fd61d124ccd423d47d28413c23e6f55d8ae3

05 Affected products

VendorProductVersionsPlatforms
netgeard6100Not specified—
netgeard6100_firmwareNot specified—
netgearr7800Not specified—
netgearr7800_firmwareNot specified—
netgearr9000Not specified—
netgearr9000_firmwareNot specified—
netgearwndr3700Not specified—
netgearwndr3700_firmwareNot specified—
netgearwndr4300Not specified—
netgearwndr4300_firmwareNot specified—

06 References