CVE-2026-7719CWE-119CWE-120

Totolink WA300 POST Request 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 WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host results in buffer overflow. The attack may be launched 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
2026-05-04T01:30Z
EPSS history
Timeline
  • 04 MAY 01:30Z
    Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow
    cvelistv5