CVE-2026-80233CAYIN Technology｜CAYIN CMS-WS/CMS-SE/SMP - Arbitrary File Upload
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It affects CAYIN Technology CAYIN CMS-WS and 2 other products. Add what you run to find out whether that includes you.
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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.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-434
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- twcert
- NVD analysis
- Deferred
- Record last updated
- Aug 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
CAYIN Technology CAYIN CMS-WS cayin_technology:cayin_cms_ws (from the name) | through 1.0.25336 | CNA record |
CAYIN Technology CAYIN CMS-SE cayin_technology:cayin_cms_se (from the name) | through 11.0.25336 | CNA record |
CAYIN Technology CAYIN SMP cayin_technology:cayin_smp (from the name) | through 4.0.25336 | CNA record |
References
- https://www.twcert.org.tw/tw/cp-132-11129-4a040-1.htmlthird-party-advisory
- https://www.twcert.org.tw/en/cp-139-11135-189f7-2.htmlthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.