What is CVE-2021-34228?

CVE-2021-34228 is a medium-severity vulnerability in Totolink A3002r, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-08-20.

How severe is CVE-2021-34228?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Totolink A3002r

CVE-2021-34228

Cross-site scripting in parent_control.htm in TOTOLINK A3002R version V1.1.1-B20200824 (Important Update, new UI) allows attackers to execute arbitrary JavaScript by modifying the "Description" field and "Service Name" field.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-08-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.292 (98.1th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.292 · newest: 0.292 · change: 0.000

Affected products

Totolink A3002r
Totolink A3002r Firmware — versions 1.1.1-b20200824

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/pup2y/IoTVul/tree/main/TOTOLINK/A3002R (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-34228?: CVE-2021-34228 is a medium-severity vulnerability in Totolink A3002r, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-08-20.
How severe is CVE-2021-34228?: Medium severity. CVSS v3 base score is 6.1 out of 10.