CVE-2026-80233
High
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.
SeverityHigh
CVSS7.2
Exploit probability—
ProductCAYIN CMS-WS
PublishedAug 26, 2026
First seenAug 26, 2026
Weakness typeCWE-434Unrestricted upload of dangerous file type
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| CAYIN Technology CAYIN CMS-WS | v ≤ 1.0.25336 | — |
| CAYIN Technology CAYIN CMS-SE | v ≤ 11.0.25336 | — |
| CAYIN Technology CAYIN SMP | v ≤ 4.0.25336 | — |
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