RCE in 4mosan Security Technology Gcb Doctor
CVE-2026-78211
4MOSAn GCB Doctor developed by 4MOSAn Security Technology has a OS Command Injection vulnerability. Unauthenticated remote attackers can inject malicious commands through an unremoved ADOdb test page parameter, thereby executing arbitrary system commands on the server.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.020 · change: +0.005
Affected products
Weakness classification (CWE)
References
- www.twcert.org.tw/tw/cp-132-11118-dfee4-1.html (third-party-advisory)
- www.twcert.org.tw/en/cp-139-11122-3d95a-2.html (third-party-advisory)
Frequently asked questions
- What is CVE-2026-78211?
- CVE-2026-78211 is a critical-severity vulnerability in 4mosan Security Technology Gcb Doctor, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-08-24.
- How severe is CVE-2026-78211?
- Critical severity. CVSS v3 base score is 9.8 out of 10.