What is CVE-2022-38308?

CVE-2022-38308 is a critical-severity vulnerability in Totolink A7000ru, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-09-14.

How severe is CVE-2022-38308?

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

Is CVE-2022-38308 known to be exploited?

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

RCE in Totolink A7000ru

CVE-2022-38308

TOTOLink A700RU V7.4cu.2313_B20191024 was discovered to contain a command injection vulnerability via the lang parameter in the function cstesystem. This vulnerability allows attackers to execute arbitrary commands via a crafted payload.

Vulnerability class: Command Injection (OS Command Injection)

Published 2022-09-14 · 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: 0.207 (97.5th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.5% 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: 0.207 · change: +0.004

Affected products

Totolink A7000ru
Totolink A7000ru Firmware — versions 7.4cu.2313_b20191024

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

github.com/WhoisZkuan/TOTOlink-A700RU (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-38308?: CVE-2022-38308 is a critical-severity vulnerability in Totolink A7000ru, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-09-14.
How severe is CVE-2022-38308?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-38308 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.