RCE in Totolink A800r

CVE-2025-28017

TOTOLINK A800R V4.1.2cu.5032_B20200408 is vulnerable to Command Injection in downloadFile.cgi via the QUERY_STRING parameter.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.011 (63.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Totolink A800r
Totolink A800r_firmware — versions 4.1.2cu.5032_b20200408
N/a — versions n/a

Weakness classification (CWE)

CWE-77 — Command Injection

Public proof-of-concept exploits

Lunax0/CVE_

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-28017?: CVE-2025-28017 is a medium-severity vulnerability in Totolink A800r, classified under Command Injection. CVSS score: 6.5/10. Published 2025-04-23.
How severe is CVE-2025-28017?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-28017 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.