What is CVE-2021-26620?

CVE-2021-26620 is a high-severity vulnerability in Efm Networks Co., Ltd Iptime Nas Product (Nas1, 2, 3, 4, 1dual, 2dual 4dual), classified under Improper Authentication. CVSS score: 7.5/10. Published 2022-03-25.

How severe is CVE-2021-26620?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Efm Networks Co., Ltd Iptime Nas Product (Nas1, 2, 3, 4, 1dual, 2dual 4dual)

CVE-2021-26620

An improper authentication vulnerability leading to information leakage was discovered in iptime NAS2dual. Remote attackers are able to steal important information in the server by exploiting vulnerabilities such as insufficient authentication when accessing the shared folder and changing user’s passwords.

Vulnerability class: Broken Authentication

EPSS: 0.013 (68.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

vuln@krcert.or.kr (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-26620?: CVE-2021-26620 is a high-severity vulnerability in Efm Networks Co., Ltd Iptime Nas Product (Nas1, 2, 3, 4, 1dual, 2dual 4dual), classified under Improper Authentication. CVSS score: 7.5/10. Published 2022-03-25.
How severe is CVE-2021-26620?: High severity. CVSS v3 base score is 7.5 out of 10.