CVE-2021-3125

Published: Apr 12, 2021Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

In TP-Link TL-XDR3230 < 1.0.12, TL-XDR1850 < 1.0.9, TL-XDR1860 < 1.0.14, TL-XDR3250 < 1.0.2, TL-XDR6060 Turbo < 1.1.8, TL-XDR5430 < 1.0.11, and possibly others, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.

Affected (6)

Products: Tp Link: Tl Xdr3230 Firmware, Tl Xdr5430 Firmware, Tl Xdr3250 Firmware, Tl Xdr1860 Firmware, Tl Xdr1850 Firmware, Tl Xdr6060 Firmware

6 products

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Tp Link Tl Xdr3230 Firmware	Before 1.0.12

Running on/with	Platform Versions
Tp Link Tl Xdr3230	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Tp Link Tl Xdr5430 Firmware	Before 1.0.11

Running on/with	Platform Versions
Tp Link Tl Xdr5430	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Tp Link Tl Xdr3250 Firmware	Before 1.0.2

Running on/with	Platform Versions
Tp Link Tl Xdr3250	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Tp Link Tl Xdr1860 Firmware	Before 1.0.14

Running on/with	Platform Versions
Tp Link Tl Xdr1860	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Tp Link Tl Xdr1850 Firmware	Before 1.0.9

Running on/with	Platform Versions
Tp Link Tl Xdr1850	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Tp Link Tl Xdr6060 Firmware	Before 1.1.8

Running on/with	Platform Versions
Tp Link Tl Xdr6060	All versions

Related CWEs

CWE-834

Excessive Iteration

The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.

References (12)

https://service.tp-link.com.cn/detail_download_8719.html

Source: cve@mitre.org

Vendor Advisory

https://service.tp-link.com.cn/detail_download_8720.html

Source: cve@mitre.org

Vendor Advisory

https://service.tp-link.com.cn/detail_download_8722.html

Source: cve@mitre.org

Vendor Advisory

https://service.tp-link.com.cn/detail_download_8723.html

Source: cve@mitre.org

Vendor Advisory

https://service.tp-link.com.cn/detail_download_8724.html

Source: cve@mitre.org

Vendor Advisory

https://service.tp-link.com.cn/detail_download_8725.html

Source: cve@mitre.org

Vendor Advisory

https://service.tp-link.com.cn/detail_download_8719.html