# CVE-2026-8263: Tenda AC6 httpd WifiExtraSet fromSetWirelessRepeat os command injection

> Remote attackers can execute arbitrary OS commands on Tenda AC6 routers via the WifiExtraSet interface, requiring immediate attention from network administrators.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 May 2026
- **Updated:** 11 May 2026
- **Also known as:** GHSA-49r7-qrrc-gw83

## What is CVE-2026-8263?

CVE-2026-8263 is a medium-severity command injection vulnerability in Tenda AC6, published on 11 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A security flaw has been discovered in Tenda AC6 15.03.06.49_multi_TDE01. Affected is the function fromSetWirelessRepeat of the file /goform/WifiExtraSet of the component httpd. Performing a manipulation of the argument mac/ssid results in os command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

Weakness: CWE-787 (Out-of-bounds Write), CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-8263?

It affects 1 product.


Products: Tenda Ac10u Firmware.

## How do I fix CVE-2026-8263?

No fix has been published for CVE-2026-8263 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8263 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8263 exists.

## Other vulnerabilities in Tenda AC6

- [CVE-2024-2763](https://insights.sbomify.com/CVE-2024-2763/): Tenda AC10U setcfm formSetCfm stack-based overflow (high 8.8)
- [CVE-2024-2764](https://insights.sbomify.com/CVE-2024-2764/): Tenda AC10U SetPptpServerCfg formSetPPTPServer stack-based overflow (high 8.8)
- [CVE-2024-2703](https://insights.sbomify.com/CVE-2024-2703/): Tenda AC10U SetOnlineDevName formSetDeviceName stack-based overflow (high 8.8)
- [CVE-2024-2704](https://insights.sbomify.com/CVE-2024-2704/): Tenda AC10U SetFirewallCfg formSetFirewallCfg stack-based overflow (high 8.8)
- [CVE-2024-2705](https://insights.sbomify.com/CVE-2024-2705/): Tenda AC10U SetNetControlList formSetQosBand stack-based overflow (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8263 and fix it if it is affected.

What it is: CVE-2026-8263 is a medium-severity command injection vulnerability in Tenda AC6, published on 11 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8263 exists.

Affected product: Tenda AC6. 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-2026-8263/ (Markdown: https://insights.sbomify.com/CVE-2026-8263/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8263
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8263
- OSV: https://osv.dev/vulnerability/CVE-2026-8263

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-8263/
Summaries are generated and may contain mistakes; the official description above is the record.