Critical 10.0Published Oct 21, 2026

CVE-2026-114383TOTOLINK EX200 wireless.so cstecgi.cgi setWiFiAclAddConfig stack-based overflow

Updated under an hour ago (2026-10-22 11:00 UTC)

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It affects TOTOLINK EX200. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TOTOLINK EX200

Exploited in the last 30 days

A weakness has been identified in TOTOLINK EX200 5.2.3c.7200. This impacts the function setWiFiAclAddConfig of the file /cgi-bin/cstecgi.cgi of the component wireless.so. This manipulation of the argument macAddress causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

CVSS: 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Received
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 21, 2026

Affected products

Affected products

TOTOLINK EX200 totolink:ex200_firmware	5.2.3c.7200	CNA record

References

https://vuldb.com/vuln/424742vdb-entry, technical-description
https://vuldb.com/vuln/424742/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-114383third-party-advisory
https://vuldb.com/submit/1019883third-party-advisory
https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE2/report.mdexploit
https://www.totolink.net/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.