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 target device. An attacker who uploads a webshell can execute arbitrary code as root.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.8
- CVSS vector
- 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
- EPSS probability
- 0.93%
- CWE
- CWE-22
- Published
- 2026-09-15
- Last modified
- 2026-09-15
Affected products
- Tencent Mass Service Engine in Cluster (MSEC)
Weakness type
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