What is CVE-2026-7717?

CVE-2026-7717 is a high-severity vulnerability in Totolink Wa300, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-05-04.

How severe is CVE-2026-7717?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Totolink Wa300

CVE-2026-7717

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…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (24.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Totolink Wa300 — versions 5.2cu.7112_B20190227

Weakness classification (CWE)

References

VDB-360893 | Totolink WA300 POST Request cstecgi.cgi UploadCustomModule buffer overflow (technical-description, vdb-entry)
VDB-360893 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #807193 | Totolink WA300 WA300 V5.2cu.7112_B20190227 Buffer Overflow (third-party-advisory)
cna@vuldb.com (exploit)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-7717?: CVE-2026-7717 is a high-severity vulnerability in Totolink Wa300, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-05-04.
How severe is CVE-2026-7717?: High severity. CVSS v3 base score is 8.8 out of 10.