CVE-2026-80233: CWE-434 Unrestricted Upload of File with Dangerous Type in CAYIN Technology CAYIN CMS-WS
Description
CAYIN Technology's CMS-WS, CMS-SE, and SMP series products contain an arbitrary file upload vulnerability (CWE-434) that allows privileged remote attackers to upload and execute web shells, leading to arbitrary code execution on the server. This vulnerability has a high severity with a CVSS score of 7.2. No specific affected versions or patches are currently documented, and no known exploits are reported in the wild.
CVSS v3.1
Score 7.2high
Affected software
CAYIN Technology
CAYIN CMS-WS
CAYIN Technology
CAYIN CMS-SE
CAYIN Technology
CAYIN SMP
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-80233 describes an unrestricted file upload vulnerability in CAYIN Technology's CMS-WS, CMS-SE, and SMP series products. Privileged remote attackers can exploit this flaw to upload malicious files such as web shells, enabling arbitrary code execution on the affected servers. The vulnerability is classified under CWE-434 and has a CVSS 3.1 base score of 7.2, indicating a high impact on confidentiality, integrity, and availability. No official remediation or patch information is currently available, and no public exploits have been observed.
Potential Impact
Successful exploitation allows privileged remote attackers to upload and execute arbitrary files, including web shells, resulting in full arbitrary code execution on the server. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict privileged access to the affected products and monitor for suspicious file uploads.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- twcert
- Date Reserved
- 2026-08-26T05:58:48.754Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8ea5d1acd9273b499be735
Added to database: 08/26/2026, 08:37:37 UTC
Last enriched: 09/09/2026, 19:52:19 UTC
Last updated: 10/10/2026, 18:48:23 UTC
Views: 59
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