CAYIN Technology｜CAYIN CMS-WS/CMS-SE/SMP - Arbitrary File Upload (CVE-2026-80233) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80233

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

Answer in brief

CVE-2026-80233 records a Unknown severity vulnerability in CAYIN Technology｜CAYIN CMS-WS/CMS-SE/SMP - Arbitrary File Upload. The current sources do not mark it as known exploited. The current feed maps CAYIN Technology/CAYIN CMS-SE (generic), CAYIN Technology/CAYIN CMS-WS (generic), CAYIN Technology/CAYIN SMP (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 26, 2026Updated Aug 26, 2026Source checked Aug 26, 2026First seen by HOL Aug 26, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps CAYIN Technology/CAYIN CMS-SE (generic), CAYIN Technology/CAYIN CMS-WS (generic), CAYIN Technology/CAYIN SMP (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
CAYIN Technology/CAYIN CMS-SEgeneric	0	Not reported
CAYIN Technology/CAYIN CMS-WSgeneric	0	Not reported
CAYIN Technology/CAYIN SMPgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for CAYIN Technology/CAYIN CMS-SE, CAYIN Technology/CAYIN CMS-WS, CAYIN Technology/CAYIN SMP.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 26, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.