Medium severity6.1NVD Advisory· Published Mar 26, 2021· Updated Jun 17, 2026
CVE-2021-3275
CVE-2021-3275
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9- cpe:2.3:o:tp-link:archer-c3150_firmware:v2_170926:*:*:*:*:*:*:*
- cpe:2.3:o:tp-link:td-w9977_firmware:v1_0.1.0_0.9.1_up_boot\(161123\)_2016-11-23_15.36.15:*:*:*:*:*:*:*
- cpe:2.3:o:tp-link:tl-wa801n_firmware:v6_eu_0.9.1_3.16_up_boot\[200116-rel61815\]:*:*:*:*:*:*:*
- cpe:2.3:o:tp-link:tl-wa801nd_firmware:v5_us_0.9.1_3.16_up_boot\[170905-rel56404\]:*:*:*:*:*:*:*
- cpe:2.3:o:tp-link:tl-wr802n_firmware:v4_us_0.9.1_3.17_up_boot\[200421-rel38950\]:*:*:*:*:*:*:*
- TP-Link/WIFI Routersdescription
Patches
Vulnerability mechanics
References
4- packetstormsecurity.com/files/161989/TP-Link-Cross-Site-Scripting.htmlnvdExploitThird Party AdvisoryVDB Entry
- github.com/smriti548/CVE/blob/main/CVE-2021-3275nvdExploitThird Party Advisory
- seclists.org/fulldisclosure/2021/Mar/67nvdExploitMailing ListThird Party Advisory
- www.tp-link.comnvdVendor Advisory
News mentions
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