Critical 9.8Published May 4, 2026

CVE-2026-7747Totolink N300RH Parameter cstecgi.cgi loginauth buffer overflow

Updated under an hour ago (Oct 26, 2026, 5:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Totolink N300RH

Exploited in the last 30 days

A security flaw has been discovered in Totolink N300RH 3.2.4-B20220812. Affected by this vulnerability is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument Password results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/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/360922vdb-entry, technical-description
https://vuldb.com/vuln/360922/ctisignature, permissions-required
https://vuldb.com/submit/807201third-party-advisory
https://lavender-bicycle-a5a.notion.site/TOTOLINK-N300RH-loginauth_password-34553a41781f80c0ad36f4d95122fd40?pvs=73exploit
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.