XSS in TP-Link Archer-C3150
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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: 0.018 (77.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- TP-Link Archer-C3150
- TP-Link Archer-C3150 Firmware — versions v2_170926
- TP-Link Td-W9977
- TP-Link Td-W9977 Firmware — versions v1_0.1.0_0.9.1_up_boot(161123)_2016-11-23_15.36.15, v1_0.1.0_0.9.1_up_boot\(161123\)_2016-11-23_15.36.15
- TP-Link Tl-Wa801n
- TP-Link Tl-Wa801nd
- TP-Link Tl-Wa801nd Firmware — versions v5_us_0.9.1_3.16_up_boot[170905-rel56404], v5_us_0.9.1_3.16_up_boot\[170905-rel56404\]
- TP-Link Tl-Wa801n Firmware — versions v6_eu_0.9.1_3.16_up_boot[200116-rel61815], v6_eu_0.9.1_3.16_up_boot\[200116-rel61815\]
- TP-Link Tl-Wr802n
- TP-Link Tl-Wr802n Firmware — versions v4_us_0.9.1_3.17_up_boot\[200421-rel38950\], v4_us_0.9.1_3.17_up_boot[200421-rel38950]
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tp-link.com (Vendor Advisory)
- github.com/smriti548/CVE/blob/main/CVE-2021-3275 (Exploit, Third Party Advisory)
- seclists.org/fulldisclosure/2021/Mar/67 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/161989/TP-Link-Cross-Site-Scripting.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3275?
- CVE-2021-3275 is a medium-severity vulnerability in TP-Link Archer-C3150, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-26.
- How severe is CVE-2021-3275?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-3275 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.