CVE-2026-80233 CAYIN Technology｜CAYIN CMS-WS/CMS-SE/SMP - Arbitrary File Upload
Privileged remote attackers can upload web shells to achieve arbitrary code execution on CAYIN CMS-WS, CMS-SE, and SMP servers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-80233?
CVE-2026-80233 is a high-severity vulnerability in CAYIN CMS-SE, published on 26 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-434
Which versions are affected by CVE-2026-80233?
How do I fix CVE-2026-80233?
No fix has been published for CVE-2026-80233 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-80233 being exploited?
There is no known exploitation of CVE-2026-80233 in the wild and no public exploit code.
Sources
Also known as GHSA-6c9p-6j83-qg5r.