# CVE-2026-85110: Tenda HG10 Boa Web Server formWlanSetup buffer overflow

> A buffer overflow in the Tenda HG10 router's web server allows remote attackers to execute arbitrary code via the ssid parameter.

- **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:** 3 Sep 2026
- **Updated:** 3 Sep 2026
- **Also known as:** GHSA-f4xv-q254-wwpm

## What is CVE-2026-85110?

CVE-2026-85110 is a high-severity memory corruption vulnerability in Tenda HG10, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was identified in Tenda HG10 300001138. Impacted is the function formWlanSetup of the file /boaform/formWlanSetup of the component Boa Web Server. The manipulation of the argument ssid leads to buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might 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-2026-85110?


## How do I fix CVE-2026-85110?

No fix has been published for CVE-2026-85110 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-85110 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85110 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85110 and fix it if it is affected.

What it is: CVE-2026-85110 is a high-severity memory corruption vulnerability in Tenda HG10, published on 3 Sep 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-2026-85110 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-2026-85110/ (Markdown: https://insights.sbomify.com/CVE-2026-85110/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85110
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85110
- OSV: https://osv.dev/vulnerability/CVE-2026-85110

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-85110/
Summaries are generated and may contain mistakes; the official description above is the record.