Cyber Resilience

CVE-2021-3125

HighDDoS

Published: 12 April 2021

Published
12 April 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0094 76.7th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-3125 is a high-severity Excessive Iteration (CWE-834) vulnerability in Tp-Link Tl-Xdr3230 Firmware. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 23.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

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.

CWE(s)
CWE-834

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

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

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References