Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-3125

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 12 products from tp-link, from tp-link, from tp-link and 9 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-04-12T19:15:14.753

Last Modified

2024-11-21T06:20:56.520

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-834

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	tp-link	tl-xdr3230_firmware	< 1.0.12	Yes
Hardware	tp-link	tl-xdr3230	-	No
Operating System	tp-link	tl-xdr5430_firmware	< 1.0.11	Yes
Hardware	tp-link	tl-xdr5430	-	No
Operating System	tp-link	tl-xdr3250_firmware	< 1.0.2	Yes
Hardware	tp-link	tl-xdr3250	-	No
Operating System	tp-link	tl-xdr1860_firmware	< 1.0.14	Yes
Hardware	tp-link	tl-xdr1860	-	No
Operating System	tp-link	tl-xdr1850_firmware	< 1.0.9	Yes
Hardware	tp-link	tl-xdr1850	-	No
Operating System	tp-link	tl-xdr6060_firmware	< 1.1.8	Yes
Hardware	tp-link	tl-xdr6060	-	No

References

https://service.tp-link.com.cn/detail_download_8719.html Vendor Advisory ([email protected])
https://service.tp-link.com.cn/detail_download_8720.html Vendor Advisory ([email protected])
https://service.tp-link.com.cn/detail_download_8722.html Vendor Advisory ([email protected])
https://service.tp-link.com.cn/detail_download_8723.html Vendor Advisory ([email protected])
https://service.tp-link.com.cn/detail_download_8724.html Vendor Advisory ([email protected])
https://service.tp-link.com.cn/detail_download_8725.html Vendor Advisory ([email protected])
https://service.tp-link.com.cn/detail_download_8719.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://service.tp-link.com.cn/detail_download_8720.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://service.tp-link.com.cn/detail_download_8722.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://service.tp-link.com.cn/detail_download_8723.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://service.tp-link.com.cn/detail_download_8724.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://service.tp-link.com.cn/detail_download_8725.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For tp-link's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.