CVE-2026-9436CWE-77CWE-78

Totolink A8000RU Web Management cstecgi.cgi setL2tpServerCfg os command injection

Critical · published May 25, 2026

CVSS v4.0
9.3
EPSS
3%
Percentile
89.0
In the wild
Unconfirmed
What it is

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setL2tpServerCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument enable can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used.

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
0.03456 · 89.0th percentile
Weaknesses
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection'); CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-05-25T07:00Z
EPSS history
Timeline
  • 25 MAY 07:00Z
    Totolink A8000RU Web Management cstecgi.cgi setL2tpServerCfg os command injection
    cvelistv5