CVE-2026-5852CWE-77CWE-78

Totolink A7100RU CGI cstecgi.cgi setIptvCfg os command injection

Critical · published April 9, 2026

CVSS v4.0
9.3
EPSS
3%
Percentile
88.3
In the wild
Unconfirmed
What it is

A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. Affected is the function setIptvCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument igmpVer causes os command injection. The attack is possible to be carried out remotely. The exploit has been made available to the public and could 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
0.03253 · 88.3th 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
2026-04-09T06:15Z
EPSS history
Timeline
  • 25 SEP 03:26Z
    EPSS moved 14% → 3%
    epss
  • 09 APR 06:15Z
    Totolink A7100RU CGI cstecgi.cgi setIptvCfg os command injection
    cvelistv5