8.1
HIGH
CVE-2021-29302
TP-Link TP-WR802N/Archer C50 Remote Code Execution Buffer Overflow
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.

INFO

Published Date :

April 12, 2021, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 6 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2021-29302 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-29302 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Tp-link tl-wr802n_firmware
2 Tp-link tl-wr802n
: Total Affected Vendor : 1 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-29302.

URL Resource
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302 Exploit Third 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 Exploit Third 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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
attilaszia/linux-iot-cves

None

Updated: 18 hours, 52 minutes ago
44 stars 7 fork 7 watcher
Born at : July 30, 2025, 2:58 p.m. This repo has been linked 117 different CVEs too.
Profile Photo
tzwlhack/Vulnerability

None

Updated: 2 weeks ago
85 stars 19 fork 19 watcher
Born at : Oct. 13, 2021, 4:56 a.m. This repo has been linked 175 different CVEs too.
Profile Photo
secnotes/CVE

Some Awesome and Simple CVE

C

Updated: 9 months, 4 weeks ago
11 stars 2 fork 2 watcher
Born at : April 9, 2021, 1:57 p.m. This repo has been linked 23 different CVEs too.
Profile Photo
secnotes/firmware-analysis-plus

Simulate firmware with one click of firmadyne (使用 firmadyne 一键模拟固件)

simulator security-tool firmware

Python Ruby Shell Makefile C Dockerfile

Updated: 2 weeks, 5 days ago
357 stars 34 fork 34 watcher
Born at : April 14, 2020, 11:45 a.m. This repo has been linked 4 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-29302 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-29302 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302
    Added Reference https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip
    Added Reference https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip [No types assigned]
    Removed Reference MITRE https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot[210317-rel64474].zip
  • Initial Analysis by [email protected]

    Apr. 21, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302 No Types Assigned https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302 Exploit, Third Party Advisory
    Changed Reference Type https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot[210317-rel64474].zip Broken Link https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot[210317-rel64474].zip Vendor Advisory
    Changed Reference Type https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware No Types Assigned https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware Vendor Advisory
    Added CWE NIST CWE-120
    Added CPE Configuration AND OR *cpe:2.3:o:tp-link:tl-wr802n_firmware:*:*:*:*:*:*:*:* versions up to (including) 2020.06 OR cpe:2.3:h:tp-link:tl-wr802n:v4:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-29302 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-29302 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

10.97 }} -7.17%

score

0.92780

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: