CVE-2026-80233

CAYIN Technology|CAYIN CMS-WS/CMS-SE/SMP - Arbitrary File Upload

Published Aug 26, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Description
CAYIN CMS-WS, CMS-SE, and SMP series products developed by CAYIN Technology have an Arbitrary File Upload vulnerability. Privileged remote attackers can upload and execute web shells backdoors, thereby enabling arbitrary code execution on the server.

Remediation

Vendor Solution

Update CMS-WS to version 1.0.26198 or later Update CMS-SE to version 11.0.26198 or later Update SMP to version 4.0.26198 or later

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Cayin Technology
Cayin Technology cayin Cms-se
Cayin Technology cayin Cms-ws
Cayin Technology cayin Smp
Vendors & Products Cayin Technology
Cayin Technology cayin Cms-se
Cayin Technology cayin Cms-ws
Cayin Technology cayin Smp
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description CAYIN CMS-WS, CMS-SE, and SMP series products developed by CAYIN Technology have an Arbitrary File Upload vulnerability. Privileged remote attackers can upload and execute web shells backdoors, thereby enabling arbitrary code execution on the server.
Title CAYIN Technology|CAYIN CMS-WS/CMS-SE/SMP - Arbitrary File Upload
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
twcert
Published
Updated
Aug 26, 2026, 1:58 PM
Reserved
Aug 26, 2026, 5:58 AM
Status
Deferred
Published
Aug 26, 2026, 9:16 AM
Modified
Aug 26, 2026, 4:40 PM