What is CVE-2022-36456?

CVE-2022-36456 is a high-severity vulnerability in Totolink A720r, classified under OS Command Injection. CVSS score: 7.8/10. Published 2022-08-25.

How severe is CVE-2022-36456?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Totolink A720r

CVE-2022-36456

TOTOLink A720R V4.1.5cu.532_B20210610 was discovered to contain a command injection vulnerability via the username parameter in /cstecgi.cgi.

Vulnerability class: Command Injection (OS Command Injection)

Published 2022-08-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Totolink A720r
Totolink A720r Firmware — versions 4.1.5cu.532_b20210610

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/Darry-lang1/vuln/tree/main/TOTOLINK/A720R/1 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-36456?: CVE-2022-36456 is a high-severity vulnerability in Totolink A720r, classified under OS Command Injection. CVSS score: 7.8/10. Published 2022-08-25.
How severe is CVE-2022-36456?: High severity. CVSS v3 base score is 7.8 out of 10.