CVE-2026-80233

HIGHCVSS 7.2/10EPSS 0.62%

Last modified

CVE-2026-80233 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.2/10

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

CVSS 4.0
8.6/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.62%

47.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-80233?
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.
How severe is CVE-2026-80233?
CVE-2026-80233 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.
How do I fix CVE-2026-80233?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST