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High · 7.2 CVE-2026-80233 EUVD-2026-66342GHSA-6c9p-6j83-qg5r

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

Published Aug 26, 2026 · Updated Aug 26, 2026 · Assigned by twcert

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.

Affected products

VendorProductAffectedFixed
CAYIN Technology CAYIN CMS-WS ≤ 1.0.25336 —
CAYIN Technology CAYIN CMS-SE ≤ 11.0.25336 —
CAYIN Technology CAYIN SMP ≤ 4.0.25336 —

References