CVE-2026-7717CWE-119CWE-120

Totolink WA300 POST Request cstecgi.cgi UploadCustomModule buffer overflow

High · published May 4, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
55.8
In the wild
Unconfirmed
What it is

A vulnerability was determined in Totolink WA300 5.2cu.7112_B20190227. This issue affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Executing a manipulation of the argument File can lead to buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.00792 · 55.8th 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
2026-05-04T01:00Z
EPSS history
Timeline
  • 04 MAY 01:00Z
    Totolink WA300 POST Request cstecgi.cgi UploadCustomModule buffer overflow
    cvelistv5