SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-21187

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

MEDIUM 6.8EPSS 0.59%

Does this matter?

Lower severity and a low EPSS score (0.59%). 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 D7800 before 1.0.1.30, R7500 before 1.0.0.122, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.92, WNDR4300 before 1.0.2.94, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62.

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
0.59% probability · 48th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Affected
netgear/d7800 firmware · netgear/r7500 firmware · netgear/r7800 firmware · netgear/r9000 firmware · netgear/wndr3700 firmware · netgear/wndr4300 firmware · netgear/wndr4500 firmware · netgear/wnr2000 firmware
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 0.59%27 October 202627 October 2026

EPSS 0.6% 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.