SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-21171

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.

MEDIUM 6.8EPSS 0.66%

Does this matter?

Lower severity and a low EPSS score (0.66%). Track it; it rarely justifies an emergency change on its own.

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 1.0.2.92, and WNDR4300 before 1.0.2.98.

CVSS 3.1
6.8 MEDIUMCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
0.66% probability · 51th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Affected
netgear/r7800 firmware · netgear/r9000 firmware · netgear/d6100 firmware · netgear/wndr3700 firmware · netgear/wndr4300 firmware
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 0.66%27 October 202627 October 2026

EPSS 0.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.