What is CVE-2026-4312?

CVE-2026-4312 is a critical-severity vulnerability in Dragonsoft Gcb\/fcb Government Financial Cybersecurity Configuration Audit Software, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-03-17.

How severe is CVE-2026-4312?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Dragonsoft Gcb\/fcb Government Financial Cybersecurity Configuration Audit Software

CVE-2026-4312

GCB/FCB Audit Software developed by DrangSoft has a Missing Authentication vulnerability, allowing unauthenticated remote attackers to directly access certain APIs to create a new administrative account.

Vulnerability class: Broken Authentication

Published 2026-03-17 · last modified 2026-06-17.

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: 0.008 (55.0th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.003

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

www.twcert.org.tw/tw/cp-132-10784-4f67d-1.html (Third Party Advisory, third-party-advisory)
www.twcert.org.tw/en/cp-139-10785-2cafe-2.html (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-4312?: CVE-2026-4312 is a critical-severity vulnerability in Dragonsoft Gcb\/fcb Government Financial Cybersecurity Configuration Audit Software, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-03-17.
How severe is CVE-2026-4312?: Critical severity. CVSS v3 base score is 9.8 out of 10.