CVE-2021-3125
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 4.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 4.5% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 4.5% · EPSS, next 30 days
- Weakness
- CWE-834
- Record status
- Modified
Affected
- TP-Link tl-xdr3230 Firmware < 1.0.12
- TP-Link tl-xdr5430 Firmware < 1.0.11
- TP-Link tl-xdr3250 Firmware < 1.0.2
- TP-Link tl-xdr1860 Firmware < 1.0.14
- TP-Link tl-xdr1850 Firmware < 1.0.9
- TP-Link tl-xdr6060 Firmware < 1.1.8
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-3125.md and follow it. Check whether this project is affected by CVE-2021-3125. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://service.tp-link.com.cn/detail_download_8719.html
- https://service.tp-link.com.cn/detail_download_8720.html
- https://service.tp-link.com.cn/detail_download_8722.html
- https://service.tp-link.com.cn/detail_download_8723.html
- https://service.tp-link.com.cn/detail_download_8724.html
- https://service.tp-link.com.cn/detail_download_8725.html
- https://service.tp-link.com.cn/detail_download_8719.html
- https://service.tp-link.com.cn/detail_download_8720.html
- https://service.tp-link.com.cn/detail_download_8722.html
- https://service.tp-link.com.cn/detail_download_8723.html
References
- https://service.tp-link.com.cn/detail_download_8719.html
- https://service.tp-link.com.cn/detail_download_8720.html
- https://service.tp-link.com.cn/detail_download_8722.html
- https://service.tp-link.com.cn/detail_download_8723.html
- https://service.tp-link.com.cn/detail_download_8724.html
- https://service.tp-link.com.cn/detail_download_8725.html
- https://service.tp-link.com.cn/detail_download_8719.html
- https://service.tp-link.com.cn/detail_download_8720.html
- https://service.tp-link.com.cn/detail_download_8722.html
- https://service.tp-link.com.cn/detail_download_8723.html
- https://service.tp-link.com.cn/detail_download_8724.html
- https://service.tp-link.com.cn/detail_download_8725.html