What is CVE-2022-28491?

CVE-2022-28491 is a critical-severity vulnerability in Totolink Cp900, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-03-23.

How severe is CVE-2022-28491?

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

RCE in Totolink Cp900

CVE-2022-28491

TOTOLink outdoor CPE CP900 V6.3c.566_B20171026 contains a command injection vulnerability in the NTPSyncWithHost function via the host_name parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-03-23 · 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: 0.047 (91.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.047 · newest: 0.047 · change: 0.000

Affected products

Totolink Cp900
Totolink Cp900 Firmware — versions 6.3c.566_b20171026

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/B2eFly/Router/blob/main/totolink/CP900/1/2.md (Broken Link)
github.com/B2eFly/CVE/blob/main/totolink/CP900/2/2.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-28491?: CVE-2022-28491 is a critical-severity vulnerability in Totolink Cp900, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-03-23.
How severe is CVE-2022-28491?: Critical severity. CVSS v3 base score is 9.8 out of 10.