RCE in TP-Link Archer A7

CVE-2021-42232

TP-Link Archer A7 Archer A7(US)_V5_210519 is affected by a command injection vulnerability in /usr/bin/tddp. The vulnerability is caused by the program taking part of the received data packet as part of the command. This will cause an attacker to execute arbitrary commands on the router.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.043 (90.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-42232: held from 0.042 to 0.043.

EPSS over last 30 days · oldest: 0.042 · newest: 0.043 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-42232?
CVE-2021-42232 is a critical-severity vulnerability in TP-Link Archer A7, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-08-23.
How severe is CVE-2021-42232?
Critical severity. CVSS v3 base score is 9.8 out of 10.