Authorization Bypass in fushengqian fuint Authentication Token Handler
CVE-2025-12623

2.3LOW

Key Information:

Vendor

Fushengqian

Status
Fuint
Vendor
CVE Published:
3 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-12623?

A vulnerability exists in the fushengqian fuint product, specifically within the Authentication Token Handler. This issue allows attackers to manipulate the ClientSignController component, leading to a potential bypass of authorization mechanisms. The vulnerability affects systems running fuint up to the commit ID 41e26be8a2c609413a0feaa69bdad33a71ae8032, and can be exploited remotely, although executing such an attack is complex. Given that fuint follows a rolling release strategy, detailed versioning is not available, which adds a layer of challenge for system administrators in tracking updates and vulnerabilities.

Affected Version(s)

fuint 41e26be8a2c609413a0feaa69bdad33a71ae8032

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-12623 - Proof of Concept

References

https://vuldb.com/?id.330915
vdb-entry
https://vuldb.com/?ctiid.330915
signaturepermissions-required
https://vuldb.com/?submit.678911
third-party-advisory

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

1098024193 (VulDB User)
JSON
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CVE-2025-12623 : Authorization Bypass in fushengqian fuint Authentication Token Handler