CVE-2026-4312
Published: 17 March 2026
Summary
CVE-2026-4312 is a critical-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Dragonsoft Gcb\/Fcb Government Financial Cybersecurity Configuration Audit Software. Its CVSS base score is 9.3 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 35.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-14 (Permitted Actions Without Identification or Authentication) and AC-2 (Account Management).
Deeper analysis
CVE-2026-4312 is a Missing Authentication vulnerability (CWE-306) affecting GCB/FCB Audit Software developed by DrangSoft. Published on 2026-03-17, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating critical severity due to its network accessibility, low complexity, and lack of prerequisites. The flaw enables unauthenticated remote attackers to directly access certain APIs without authentication.
Unauthenticated attackers with network access can exploit this vulnerability remotely and with low effort, requiring no privileges, user interaction, or special conditions. Successful exploitation allows attackers to create a new administrative account, potentially granting full control over the affected software, with high impacts on confidentiality, integrity, and availability.
Mitigation details are provided in advisories from TWCERT/CC, available at https://www.twcert.org.tw/en/cp-139-10785-2cafe-2.html and https://www.twcert.org.tw/tw/cp-132-10784-4f67d-1.html. Security practitioners should consult these references for patch information, workarounds, or configuration changes to address the issue.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-12547
Vulnerability details
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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Missing authentication in public-facing APIs enables exploitation of public-facing application (T1190) and creation of administrative accounts (T1136).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires organizations to limit and document permitted actions without identification or authentication, preventing unauthenticated access to APIs for creating administrative accounts.
Enforces approved authorizations for logical access to system resources, ensuring authentication is required for sensitive API endpoints exploited in this vulnerability.
Manages account creation processes to restrict administrative account provisioning to authorized entities only, blocking unauthorized admin account creation via unauthenticated APIs.