CVE-2026-89040
CRITICAL
NVD
CVSS Score
9.8
Severity
CRITICAL
Published
Sep 15, 2026
Vendor
unknown
Description
Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root.