---
title: "CVE-2026-114383: TOTOLINK EX200 - Buffer Overflow"
description: "TOTOLINK EX200 5.2.3c.7200 contains a stack-based buffer overflow caused by manipulation of the \"macAddress\" argument in setWiFiAclAddConfig function of /cgi-bin/cstecgi.cgi in wireless.so, letting remote attackers execute arbitrary code, exploit requires crafted request."
url: https://panop.io/threat-heartbeat/CVE-2026-114383/
---

# CVE-2026-114383 TOTOLINK EX200 - Buffer Overflow

TOTOLINK EX200 5.2.3c.7200 contains a stack-based buffer overflow caused by manipulation of the "macAddress" argument in setWiFiAclAddConfig function of /cgi-bin/cstecgi.cgi in wireless.so, letting remote attackers execute arbitrary code, exploit requires crafted request.

CVSS base score 10.0 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-114383)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Published

21 October 2026

Updated

22 October 2026

Weakness

[CWE-119](https://cwe.mitre.org/data/definitions/119.html)

## Vendor fix

Update to the latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-114383](https://nvd.nist.gov/vuln/detail/CVE-2026-114383)
- [https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE2/report.md](https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE2/report.md)
- [https://vuldb.com/cve/CVE-2026-114383](https://vuldb.com/cve/CVE-2026-114383)
- [https://vuldb.com/submit/1019883](https://vuldb.com/submit/1019883)
- [https://vuldb.com/vuln/424742](https://vuldb.com/vuln/424742)
- [https://vuldb.com/vuln/424742/cti](https://vuldb.com/vuln/424742/cti)
- [https://www.totolink.net/](https://www.totolink.net/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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