CyberSecBulletin

Zbtlink vulnerabilities

We track 3 vulnerabilities in Zbtlink products across 35 products. 3 are rated high or critical, and none are known to be exploited. The most recent was published on August 27, 2026.

3vulnerabilities
3critical
0high
0exploited
9.8average CVSS score

Latest Zbtlink vulnerabilities

  • 9.8 Critical severity

    WE1326: Improper Neutralization of Special Elements used in an OS Command

    CVE-2026-74233ZbtlinkEPSS 3.37%

    Zbtlink WE1326, WE357, WE5926, WE5926-WD, WE826-Q, WE826-T2, WE826-WD, WG108, and WG3526 firmware 19.1101, Zbtlink WE2426-C firmware 19.1112, Zbtlink WE5926-EC_QP firmware 20.0516, Zbtlink WF3526-P firmware 19.051, CTN720-W1, LF-1541, and MT7620N firmware 19.1

  • 9.8 Critical severity

    L3_V2_8: Channel Accessible by Non-Endpoint

    CVE-2026-74232Zbtlink

    Zbtlink L3_V2_8 firmware 3.0.0.4.528, Zbtlink WE826-T2 firmware 19.1101, Zbtlink ZBT-7628 firmware 1.0.0.2.007, Zbtlink ZBT-ZBT7621 firmware 1.0.0.3.001, MoreQuick MQAC-7620, MQAC-7620A, MQAP-7620, MQAP-7620A, and MQAP-7628 firmware 1.0.0.2.000, AP522 firmware

  • 9.8 Critical severity

    CPE2801 Firmware: Embedded Malicious Code

    CVE-2026-66747Zbtlink

    Zbtlink router firmware ships an embedded remote-control implant, ENDLESSDOORS, present in every published build across the product line. It is the open-source ycsunjane/rctl tool built in as an OpenWrt package (librctl.so), started at boot and run as root und