SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-21170

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker.

HIGH 8.8EPSS 0.73%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects EX2700 before 1.0.1.28, R7800 before 1.0.2.40, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, and WN3100RPv2 before 1.0.0.56.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.73% probability · 54th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Affected
netgear/r7800 firmware · netgear/ex2700 firmware · netgear/wn2000rpt firmware · netgear/wn3000rp firmware · netgear/wn3100rp firmware
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 0.73%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.