PT-2026-36793 · Totolink · N300Rh

Wxhwxhwxh_Mie · Published 2026-05-04 · Updated 2026-05-04 · CVE-2026-7748

Mitre

CVSS v3.1

8.8

High

Base vector

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

A weakness has been identified in Totolink N300RH 3.2.4-B20220812. Affected by this issue is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Executing a manipulation of the argument FileName can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

CWE-119

Related Identifiers

CVE-2026-7748

Affected Products

N300Rh

References · 7

• 🔥 https://lavender-bicycle-a5a.notion.site/TOTOLINK-N300RH-setUpgradeFW-34553a41781f80abb1d1c627d7ff4329?pvs=73 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7748 · Security Note
• https://vuldb.com/vuln/360923/cti · Note
• https://totolink.net · Note
• https://reddit.com/r/pwnhub/comments/1t3iog3/critical_buffer_overflow_flaw_detected_in · Reddit Post
• https://vuldb.com/submit/807202 · Note
• https://vuldb.com/vuln/360923 · Note