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Vulnerability record · CVE-2021-34228 · published 20 August 2021

CVE-2021-34228: Totolink a3002r firmware cross-site scripting vulnerability

TTotolink · A3002r Firmware

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.

6.1 CVSS 3.1 Medium EPSS 29% · top 1.9% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/pup2y/IoTVul/tree/main/TOTOLINK/A3002R ExploitThird Party Advisory
https://github.com/pup2y/IoTVul/tree/main/TOTOLINK/A3002R ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-55591Totolink a3002r firmware command injection vulnerabilityTOTOLINK-A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability in the devicemac parameter in the formMapDel endpoi…EPSS 7.6%9.8CVE-2025-45863Totolink a3002r firmware classic buffer overflow vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the macstr parameter in the formMapDelDevice interface.EPSS 0.61%9.8CVE-2025-45861Totolink a3002r firmware classic buffer overflow vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the routername parameter in the formDnsv6 interface.EPSS 0.61%9.8CVE-2025-45865Totolink a3002r firmware classic buffer overflow vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the dnsaddr parameter in the formDhcpv6s interface.EPSS 0.61%9.8CVE-2025-45858Totolink a3002r firmware os command injection vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability via the FUN_00459fdc function.EPSS 11%9.8CVE-2025-25579Totolink a3002r firmware os command injection vulnerabilityTOTOLINK A3002R V4.0.0-B20230531.1404 is vulnerable to Command Injection in /bin/boa via bandstr.EPSS 10%9.8CVE-2024-34195Totolink a3002r firmware out-of-bounds write vulnerabilityTOTOLINK AC1200 Wireless Router A3002R Firmware V1.1.1-B20200824 is vulnerable to Buffer Overflow. In the boa server program's CGI handling function …EPSS 0.94%9.8CVE-2024-42520Totolink a3002r firmware classic buffer overflow vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 contains a buffer overflow vulnerability in /bin/boa via formParentControl.EPSS 0.63%

Source: NIST National Vulnerability Database (record CVE-2021-34228), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.