CVE-2021-3275

Public Exploit

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.21% Top 25%
Vendor Advisory tp-link.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.tp-link.com vendor advisory
https://github.com/smriti548/CVE/blob/main/CVE-2021-3275 third party advisory exploit
https://seclists.org/fulldisclosure/2021/Mar/67 mailing list exploit third party advisory
http://packetstormsecurity.com/files/161989/TP-Link-Cross-Site-Scripting.html exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-3275?
CVE-2021-3275 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3275?
To fix CVE-2021-3275, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3275 being actively exploited in the wild?
It is possible that CVE-2021-3275 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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