SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-21097

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

CRITICAL 9.8EPSS 1.19%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.19%). 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 WAC505 before 5.0.5.4, WAC510 before 5.0.5.4, WAC120 before 2.1.7, WN604 before 3.3.10, WNAP320 before 3.7.11.4, WNAP210v2 before 3.7.11.4, WNDAP350 before 3.7.11.4, WNDAP360 before 3.7.11.4, WNDAP660 before 3.7.11.4, WNDAP620 before 2.1.7, and WND930 before 2.1.5.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.19% probability · 68th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Affected
netgear/wac505 firmware · netgear/wac510 firmware · netgear/wac120 firmware · netgear/wn604 firmware · netgear/wnap320 firmware · netgear/wnap210 firmware · netgear/wndap350 firmware · netgear/wndap360 firmware · netgear/wndap660 firmware · netgear/wndap620 firmware · netgear/wnd930 firmware
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 1.19%27 October 202627 October 2026

EPSS 1.2% 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.