CRITICAL 9.3 NVD
CVE-2026-89040
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
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.
References
- https://github.com/Tencent/MSEC
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-258-
- https://www.cve.org/CVERecord?id=CVE-2026-89040
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-09-15 via NVD.
Risk Timeline
CVE Disclosed2026-09-15 · -1 days ago
Remediation Resources
Official Advisory
www.cve.org/CVERecord?id=CVE-2026-89040GitHub
github.com/Tencent/MSEC
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