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.
Published: 2026-09-15
Score: 9.3 Critical
EPSS: 1.1% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 22 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Tencent
Tencent mass Service Engine In Cluster (msec)
Vendors & Products Tencent
Tencent mass Service Engine In Cluster (msec)

Tue, 15 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title Tencent Mass Service Engine in Cluster (MSEC) path traversal
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, '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'}


Subscriptions

Tencent Mass Service Engine In Cluster (msec)
cve-icon MITRE

Status: PUBLISHED

Assigner: cisa-cg

Published:

Updated: 2026-09-22T16:22:37.341Z

Reserved: 2026-09-10T16:43:38.518Z

Link: CVE-2026-89040

cve-icon Vulnrichment

Updated: 2026-09-22T16:22:34.367Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-15T20:19:20.240

Modified: 2026-09-22T17:17:28.647

Link: CVE-2026-89040

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-18T18:45:12Z

Weaknesses
  • CWE-22

    Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')