Buffer overflow in Totolink Wa300
CVE-2026-7719
A security flaw has been discovered in Totolink WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host r…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (27.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Totolink Wa300 — versions 5.2cu.7112_B20190227
Weakness classification (CWE)
References
- VDB-360895 | Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow (technical-description, vdb-entry)
- VDB-360895 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #807197 | 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-2026-7719?
- CVE-2026-7719 is a critical-severity vulnerability in Totolink Wa300, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2026-05-04.
- How severe is CVE-2026-7719?
- Critical severity. CVSS v3 base score is 9.8 out of 10.