What’s Vulnerable › Vulnerabilities

CVE-2026-7749: Totolink N300RH POST Request cstecgi.cgi setWanConfig buffer overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% 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 security vulnerability has been detected in Totolink N300RH 3.2.4-B20220812. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument priDns leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.

Affected products

• Totolink N300RH: 3.2.4-B20220812

References

• https://lavender-bicycle-a5a.notion.site/TOTOLINK-N300RH-setWanConfig-34553a41781f80ed8500d9b8d54074f2
• https://vuldb.com/submit/807203
• https://vuldb.com/vuln/360924
• https://vuldb.com/vuln/360924/cti
• https://www.totolink.net/

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