# CVE-2026-6988: Tenda HG10 Boa Service formRouting formRoute buffer overflow

> Remote attackers can trigger a buffer overflow in the Tenda HG10 router's Boa Service via the formRoute function, potentially leading to code execution or denial of service.

- **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:** 25 Apr 2026
- **Updated:** 27 Apr 2026
- **Also known as:** GHSA-xw6x-qvx6-jcr3

## What is CVE-2026-6988?

CVE-2026-6988 is a high-severity memory corruption vulnerability in Tenda HG10, published on 25 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A flaw has been found in Tenda HG10 HG7_HG9_HG10re_300001138_en_xpon. This issue affects the function formRoute of the file /boaform/formRouting of the component Boa Service. This manipulation of the argument nextHop causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been published 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-2026-6988?

It affects 1 product.


Products: Tenda Hg10 Firmware.

## How do I fix CVE-2026-6988?

No fix has been published for CVE-2026-6988 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-6988 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6988 exists.

## Other vulnerabilities in Tenda HG10

- [CVE-2026-1687](https://insights.sbomify.com/CVE-2026-1687/): Tenda HG10 Boa Webserver formSamba command injection (medium 6.9)
- [CVE-2026-1689](https://insights.sbomify.com/CVE-2026-1689/): Tenda HG10 Login formLogin checkUserFromLanOrWan command injection (medium 6.9)
- [CVE-2026-1690](https://insights.sbomify.com/CVE-2026-1690/): Tenda HG10 formSysCmd system command injection (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-6988 and fix it if it is affected.

What it is: CVE-2026-6988 is a high-severity memory corruption vulnerability in Tenda HG10, published on 25 Apr 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-2026-6988 exists.

Affected product: Tenda HG10. 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-2026-6988/ (Markdown: https://insights.sbomify.com/CVE-2026-6988/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-6988
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6988
- OSV: https://osv.dev/vulnerability/CVE-2026-6988

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-6988/
Summaries are generated and may contain mistakes; the official description above is the record.