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Vulnerability record · CVE-2021-29302 · published 12 April 2021

CVE-2021-29302: Tp-link tl-wr802n firmware classic buffer overflow vulnerability

Tp Link · Tl Wr802n Firmware

TP-Link TL-WR802N(US), Archer_C50v5_US v4_200 <= 2020.06 contains a buffer overflow vulnerability in the httpd process in the body message. The attack vector is: The attacker can get shell of the router by sending a message through the network, which may lead to remote code execution.

8.1 CVSS 3.1 High EPSS 5.9% · top 7.0% CWE-120 · Classic buffer overflow
8.1CVSS 3.1 base score, v2 9.3
5.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

TP-Link TL-WR802N(US), Archer_C50v5_US v4_200 <= 2020.06 contains a buffer overflow vulnerability in the httpd process in the body message. The attack vector is: The attacker can get shell of the router by sending a message through the network, which may lead to remote code execution.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302 ExploitThird Party Advisory
https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip
https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware Vendor Advisory
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302 ExploitThird Party Advisory
https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip
https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-29302), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.