CVE-2026-89040: critical vulnerability in Tencent Mass Service Engine in Cluster (MSEC)
Tencent Mass Service Engine in Cluster (MSEC) path traversal
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 1.1%
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.
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
Affected products
Tencent · Mass Service Engine in Cluster (MSEC)