CRITICAL: CVE-2026-5993 (CVSS 9.8) — multiple products

CVE: CVE-2026-5993

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wifiOff leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used.

Verified Sources

References

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_165/README.md
https://vuldb.com/submit/792041
https://vuldb.com/vuln/356547
https://vuldb.com/vuln/356547/cti
https://www.totolink.net/

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#critical