What is CVE-2021-44261?

CVE-2021-44261 is a medium-severity vulnerability in NETGEAR R6220, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2022-03-17.

How severe is CVE-2021-44261?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-44261 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in NETGEAR R6220

CVE-2021-44261

A vulnerability is in the 'BRS_top.html' page of the Netgear W104, version WAC104-V1.0.4.13, which can allow a remote attacker to access this page without any authentication. When processed, it exposes firmware version information for the device.

Vulnerability class: Broken Authentication

Published 2022-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.203 (97.4th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.203 · newest: 0.203 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

Public proof-of-concept exploits

References

www.netgear.com/about/security/ (Vendor Advisory)
github.com/zer0yu/CVE_Request/blob/master/netgear/Netgear_W104_unauthorized_acc… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-44261?: CVE-2021-44261 is a medium-severity vulnerability in NETGEAR R6220, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2022-03-17.
How severe is CVE-2021-44261?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-44261 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.