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CVE-2026-7748 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: May 4, 2026

Totolink N300RH - Buffer Overflow

Published: May 4, 2026Updated: May 4, 2026Remote Exploitable

Overview

Totolink N300RH 3.2.4-B20220812 contains a buffer overflow caused by manipulation of the FileName argument in setUpgradeFW function of /cgi-bin/cstecgi.cgi POST Request Handler, letting remote attackers execute code, exploit requires crafted request.

Severity & Score

Severity: High

CVSS Score: 8.8

Impact

Remote attackers can execute arbitrary code, potentially leading to full system compromise.

Mitigation

Update to the latest version.

References

https://vuldb.com/vuln/360923
https://vuldb.com/vuln/360923/cti
https://www.totolink.net/
https://lavender-bicycle-a5a.notion.site/TOTOLINK-N300RH-setUpgradeFW-34553a41781f80abb1d1c627d7ff4329?pvs=73
https://vuldb.com/submit/807202

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-7748
Severity: High
CVSS Score: 8.8
Type: buffer_overflow
Status: new

CWE

CWE-119

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H