High 8.8Published May 3, 2026

CVE-2026-7717Totolink WA300 POST Request cstecgi.cgi UploadCustomModule buffer overflow

Updated under an hour ago (Oct 26, 2026, 12:40 PM ET)

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Every CVE for Totolink WA300

Exploited in the last 30 days

A vulnerability was determined in Totolink WA300 5.2cu.7112_B20190227. This issue affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Executing a manipulation of the argument File can lead to buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.

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 WA300 totolink:wa300_firmware	5.2cu.7112_B20190227	CNA record

References

References

https://vuldb.com/vuln/360893	vdb-entry, technical-description
https://vuldb.com/vuln/360893/cti	signature, permissions-required
https://vuldb.com/submit/807193	third-party-advisory
https://lavender-bicycle-a5a.notion.site/TOTOLINK-WA300-UploadCustomModule-34553a41781f80a8a287e48a7fb04de9	exploit
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.