High 8.8Published May 4, 2026

CVE-2026-7749Totolink N300RH POST Request cstecgi.cgi setWanConfig buffer overflow

Updated under an hour ago (Oct 26, 2026, 3:30 AM ET)

Does this affect you?

It affects Totolink N300RH. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Totolink N300RH

Exploited in the last 30 days

A security vulnerability has been detected in Totolink N300RH 3.2.4-B20220812. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument priDns leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Weakness (CWE): CWE-120, 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: Deferred
Record last updated: May 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Totolink N300RH totolink:n300rh_firmware	3.2.4-B20220812	CNA record

References

https://vuldb.com/vuln/360924vdb-entry, technical-description
https://vuldb.com/vuln/360924/ctisignature, permissions-required
https://vuldb.com/submit/807203third-party-advisory
https://lavender-bicycle-a5a.notion.site/TOTOLINK-N300RH-setWanConfig-34553a41781f80ed8500d9b8d54074f2exploit
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.