by Kastro
Paper/Archive/CVE-2026-44089

CVE-2026-44089

Totolink EX1200L — Buffer Overflow in Totolink EX1200L router

EPSS 0.3%CVSS 9.4
critical.is priorityof 100
33
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 23.8.238 × 204.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Totolink EX1200L router is vulnerable to Buffer Overflow in the login functionality in cgi-bin/cstecgi.cgi endpoint. This vulnerability could be exploited to cause the program to crash and to execute code remotely. This allows the attacker to perform actions as root including reading and editing data, as well as bricking the router. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 9.3.5u.6146_B20201023 but may also affect other versions.

Affected

ProductAffectedFixed inSource
EX1200L9.3.5u.6146_B20201023–CNA

Scores by source

CERT-PL (CNA)9.4CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

writeupcert.pl/en/posts/2026/06/CVE-2026-44089reftotolink.net/home/menu/detail/menu_listtpl/download/id/217/ids/36.html