What is CVE-2021-26797?

CVE-2021-26797 is a critical-severity vulnerability in Hametech Hame Sd1 Wi-Fi, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2021-04-26.

How severe is CVE-2021-26797?

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

Vulnerability in Hametech Hame Sd1 Wi-Fi

CVE-2021-26797

An access control vulnerability in Hame SD1 Wi-Fi firmware <=V.20140224154640 allows an attacker to get system administrator through an open Telnet service.

Published 2021-04-26 · 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: 0.014 (70.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-521 — Weak Password Requirements

References

le0nc.blogspot.com/2021/04/cve-2021-26797-access-control.html (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-26797?: CVE-2021-26797 is a critical-severity vulnerability in Hametech Hame Sd1 Wi-Fi, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2021-04-26.
How severe is CVE-2021-26797?: Critical severity. CVSS v3 base score is 9.8 out of 10.