What is CVE-2025-28138?

CVE-2025-28138 is a critical-severity vulnerability in Totolink A800r, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-03-27.

How severe is CVE-2025-28138?

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

RCE in Totolink A800r

CVE-2025-28138

The TOTOLINK A800R V4.1.2cu.5137_B20200730 were found to contain a pre-auth remote command execution vulnerability in the setNoticeCfg function through the NoticeUrl parameter.

Vulnerability class: Command Injection (OS Command Injection)

Published 2025-03-27 · 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: 0.011 (65.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000

Affected products

Totolink A800r
Totolink A800r Firmware — versions 4.1.2cu.5137_b20200730

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

Frequently asked questions

What is CVE-2025-28138?: CVE-2025-28138 is a critical-severity vulnerability in Totolink A800r, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-03-27.
How severe is CVE-2025-28138?: Critical severity. CVSS v3 base score is 9.8 out of 10.