# CVE-2026-30817: Arbitrary File Reading Vulnerability in dnsmasq Module in TP-Link AX53

> An authenticated adjacent attacker can read arbitrary files on TP-Link AX53 routers via a malicious OpenVPN configuration file.

- **Severity:** Medium 6.8 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Apr 2026
- **Updated:** 7 May 2026
- **Also known as:** GHSA-wmw7-jpm9-rmff

## What is CVE-2026-30817?

CVE-2026-30817 is a medium-severity path traversal vulnerability in TP-Link Systems Inc. AX53 v1.0, published on 8 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An external configuration control vulnerability in the OpenVPN module of TP-Link AX53 v1.0 allows an authenticated adjacent attacker to read arbitrary files when a malicious configuration file is processed.  Successful exploitation may allow unauthorized access to arbitrary files on the device, potentially exposing sensitive information.This issue affects AX53 v1.0: before 1.7.1 Build 20260213.

Weakness: CWE-610 (Externally Controlled Reference to a Resource in Another Sphere), CWE-15 (External Control of System or Configuration Setting)

## Which versions are affected by CVE-2026-30817?

It affects 1 product.


Products: Tp-Link Archer Ax53 Firmware.

## How do I fix CVE-2026-30817?

No fix has been published for CVE-2026-30817 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30817 being exploited?

There is no known exploitation of CVE-2026-30817 in the wild and no public exploit code.

## Other vulnerabilities in TP-Link Systems Inc. AX53 v1.0

- [CVE-2025-62673](https://insights.sbomify.com/CVE-2025-62673/): Heap-based Buffer Overflow Vulnerability in Archer AX53 and AX12 (high 8.6)
- [CVE-2026-30815](https://insights.sbomify.com/CVE-2026-30815/): OS Command Injection Vulnerability in OpenVPN Module in TP-Link AX53 (high 8.5)
- [CVE-2026-30818](https://insights.sbomify.com/CVE-2026-30818/): OS Command Injection Vulnerability in dnsmasq Module in TP-Link AX53 (high 8.5)
- [CVE-2025-15608](https://insights.sbomify.com/CVE-2025-15608/): Buffer Overflow in Network Probe Handling Function of TP-Link Archer AX53 + Archer AX55 (high 7.7)
- [CVE-2026-30814](https://insights.sbomify.com/CVE-2026-30814/): Buffer Overflow Vulnerability in TP-Link AX53 (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30817 and fix it if it is affected.

What it is: CVE-2026-30817 is a medium-severity path traversal vulnerability in TP-Link Systems Inc. AX53 v1.0, published on 8 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-30817 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. AX53 v1.0. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-30817/ (Markdown: https://insights.sbomify.com/CVE-2026-30817/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30817
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30817
- OSV: https://osv.dev/vulnerability/CVE-2026-30817

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30817/
Summaries are generated and may contain mistakes; the official description above is the record.