# CVE-2026-2137: Tenda TX3 SetIpMacBind buffer overflow

> Remote attackers can trigger a buffer overflow in the Tenda TX3 router's SetIpMacBind function, potentially leading to code execution or service disruption.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Feb 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-cp9m-vc98-h8c6

## What is CVE-2026-2137?

CVE-2026-2137 is a high-severity memory corruption vulnerability in Tenda TX3, published on 8 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been found in Tenda TX3 up to 16.03.13.11_multi. This impacts an unknown function of the file /goform/SetIpMacBind. The manipulation of the argument list leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2026-2137?

It affects 1 product.


Products: Tenda Tx3 Firmware.

## How do I fix CVE-2026-2137?

No fix has been published for CVE-2026-2137 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2137 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2137 exists.

## Other vulnerabilities in Tenda TX3

- [CVE-2022-43024](https://insights.sbomify.com/CVE-2022-43024/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-43025](https://insights.sbomify.com/CVE-2022-43025/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-43026](https://insights.sbomify.com/CVE-2022-43026/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-43027](https://insights.sbomify.com/CVE-2022-43027/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-43028](https://insights.sbomify.com/CVE-2022-43028/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2137 and fix it if it is affected.

What it is: CVE-2026-2137 is a high-severity memory corruption vulnerability in Tenda TX3, published on 8 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2137 exists.

Affected product: Tenda TX3. 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-2026-2137/ (Markdown: https://insights.sbomify.com/CVE-2026-2137/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2137
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2137
- OSV: https://osv.dev/vulnerability/CVE-2026-2137

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-2137/
Summaries are generated and may contain mistakes; the official description above is the record.