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CVE-2022-25062

HighPublished

TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain an integer overflow via the function dm_checkString. This vulnerability allows attackers to...

Published: Feb 25, 2022
Updated: Jul 9, 2026
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

3.5%

Low · next 30 days

Percentile: 88.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain an integer overflow via the function dm_checkString. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

Sources

CVE-2022-25062Exploit
This script exploits a vulnerability (IoF) in the TPLink WR840N router, using a field for injecting code in the module DNS.

Responsible use

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