CVE-2022-25062

7.5 HIGH 4% exploit odds No fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 3.5% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2022-02-14 00:00 UTC ReservedThe CVE id was reserved by its CNA
2022-02-25 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-07-09 01:17 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 3.5% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2022-02-25 20:15 UTC
Last modified: 2026-07-09 01:17 UTC
Exploit probability: 3.5% · EPSS, next 30 days
Weakness: CWE-190 · Integer overflow
Record status: Modified

Affected

TP-Link tl-wr840n Firmware 6.20_180709

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

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

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2022-25062.md and follow it. Check whether this project is affected by CVE-2022-25062. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record