Vulnerability Monitor

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CVE-2021-3275

Unauthenticated stored cross-site scripting (XSS) exists in multiple TP-Link products including WIFI Routers (Wireless AC routers), Access Points, ADSL + DSL Gateways and Routers, which affects TD-W9977v1, TL-WA801NDv5, TL-WA801Nv6, TL-WA802Nv5, and Archer C3150v2 devices through the improper validation of the hostname. Some of the pages including dhcp.htm, networkMap.htm, dhcpClient.htm, qsEdit.htm, and qsReview.htm and use this vulnerable hostname function (setDefaultHostname()) without sanitization.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.1, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 10 products from tp-link, from tp-link, from tp-link and 7 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-03-26T13:15:11.663

Last Modified

2024-11-21T06:21:11.943

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.1 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	tp-link	td-w9977_firmware	v1_0.1.0_0.9.1_up_boot\(161123\)_2016-11-23_15.36.15	Yes
Hardware	tp-link	td-w9977	-	No
Operating System	tp-link	tl-wa801nd_firmware	v5_us_0.9.1_3.16_up_boot\[170905-rel56404\]	Yes
Hardware	tp-link	tl-wa801nd	-	No
Operating System	tp-link	tl-wa801n_firmware	v6_eu_0.9.1_3.16_up_boot\[200116-rel61815\]	Yes
Hardware	tp-link	tl-wa801n	-	No
Operating System	tp-link	tl-wr802n_firmware	v4_us_0.9.1_3.17_up_boot\[200421-rel38950\]	Yes
Hardware	tp-link	tl-wr802n	-	No
Operating System	tp-link	archer-c3150_firmware	v2_170926	Yes
Hardware	tp-link	archer-c3150	-	No

References

http://packetstormsecurity.com/files/161989/TP-Link-Cross-Site-Scripting.html Exploit, Third Party Advisory, VDB Entry ([email protected])
https://github.com/smriti548/CVE/blob/main/CVE-2021-3275 Exploit, Third Party Advisory ([email protected])
https://seclists.org/fulldisclosure/2021/Mar/67 Exploit, Mailing List, Third Party Advisory ([email protected])
https://www.tp-link.com Vendor Advisory ([email protected])
http://packetstormsecurity.com/files/161989/TP-Link-Cross-Site-Scripting.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/smriti548/CVE/blob/main/CVE-2021-3275 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/fulldisclosure/2021/Mar/67 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.tp-link.com Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For tp-link's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.