What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-04 · updated 2026-10-26
• Weakness: CWE-119

Description

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.

Affected products

• Totolink WA300: 5.2cu.7112_B20190227

References

• https://lavender-bicycle-a5a.notion.site/TOTOLINK-WA300-UploadCustomModule-34553a41781f80a8a287e48a7fb04de9
• https://vuldb.com/submit/807193
• https://vuldb.com/vuln/360893
• https://vuldb.com/vuln/360893/cti
• https://www.totolink.net/

Get alerted when CVE-2026-7717 or the next vulnerability affects your stack