---
title: "CVE-2021-41653: The PING function on the TP-Link… | CubePath"
description: "The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution…"
language: en
source: https://cubepath.com/security/cve/CVE-2021-41653
---

# CVE-2021-41653: The PING function on the TP-Link… | CubePath

## Description

The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)\_V5\_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-41653)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.76045 (76.0% probability)

Percentile

99.5%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [tp-link.com/us/press/security-advisory](https://www.tp-link.com/us/press/security-advisory/)
- [k4m1ll0.com/cve-2021-41653.html](https://k4m1ll0.com/cve-2021-41653.html)

## Timeline

1. ID reserved Sep 27, 2021
2. Record published Nov 13, 2021
3. Record last updated Jul 9, 2026

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)