CVE-2026-80233

8.6 highEPSS 0.8%

High (8.6). EPSS 0.8% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.6 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.2 high

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2026-08-26
Modified: 2026-08-26
Record from: the NVD, synced 2026-10-19

References

https://www.twcert.org.tw/en/cp-139-11135-189f7-2.html
https://www.twcert.org.tw/tw/cp-132-11129-4a040-1.html

Check your stack JSON