CVE-2026-89040
Tencent Mass Service Engine in Cluster (MSEC) path traversal
- State
- Published
- Severity
- 9.3 Critical
- Published
- Sep 15, 2026
- Updated
- Sep 22, 2026
- Reserved
- Sep 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | cisa-cg |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | cisa-cg |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
Mass Service Engine in Cluster (MSEC)Tencent |
|
References
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