What is CVE-2018-21132?

CVE-2018-21132 is a critical-severity vulnerability in NETGEAR Wac505, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2020-04-23.

How severe is CVE-2018-21132?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in NETGEAR Wac505

CVE-2018-21132

Certain NETGEAR devices are affected by authentication bypass. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.

Vulnerability class: Broken Authentication

Published 2020-04-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

kb.netgear.com/000060228/Security-Advisory-for-Authentication-Bypass-on-Some-Wi… (Vendor Advisory)

Frequently asked questions

What is CVE-2018-21132?: CVE-2018-21132 is a critical-severity vulnerability in NETGEAR Wac505, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2020-04-23.
How severe is CVE-2018-21132?: Critical severity. CVSS v3 base score is 9.8 out of 10.