CVE-2026-7747CWE-119CWE-120

Totolink N300RH Parameter cstecgi.cgi loginauth buffer overflow

Critical · published May 4, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
63.1
In the wild
Unconfirmed
What it is

A security flaw has been discovered in Totolink N300RH 3.2.4-B20220812. Affected by this vulnerability is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument Password results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.01020 · 63.1th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-05-04T08:15Z
EPSS history
Timeline
  • 04 MAY 08:15Z
    Totolink N300RH Parameter cstecgi.cgi loginauth buffer overflow
    cvelistv5