What is the CVSS score of CVE-2023-7334?

CVE-2023-7334 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Which versions of .NET are affected by CVE-2023-7334?

CVE-2023-7334 presents critical security risk, a insecure deserialization vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2023-7334?

Yes, a public proof-of-concept exploit is available for CVE-2023-7334. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2023-7334?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Restrict deserialization to trusted data sources and implement integrity checks.

.NET CVE-2023-7334

CRITICAL

Deserialization of Untrusted Data (CWE-502)

2026-01-15 disclosure@vulncheck.com

.NET RCE Deserialization

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 23, 2026 - 19:51 vuln.today

Public exploit code

CVE Published

Jan 15, 2026 - 22:16 nvd

CRITICAL 9.8

DescriptionCVE.org

Changjetong T+ versions up to and including 16.x contain a .NET deserialization vulnerability in an AjaxPro endpoint that can lead to remote code execution. A remote attacker can send a crafted request to /tplus/ajaxpro/Ufida.T.CodeBehind._PriorityLevel,App_Code.ashx?method=GetStoreWarehouseByStore with a malicious JSON body that leverages deserialization of attacker-controlled .NET types to invoke arbitrary methods such as System.Diagnostics.Process.Start. This can result in execution of arbitrary commands in the context of the T+ application service account. Exploitation evidence was observed by the Shadowserver Foundation as early as 2023-08-19 (UTC).

AnalysisAI

Changjetong T+ (through 16.x) has .NET deserialization RCE in an AjaxPro endpoint. Attacker-controlled JSON triggers deserialization of malicious .NET types. PoC available.

Technical ContextAI

The AjaxPro endpoint deserializes JSON into attacker-controlled .NET types (CWE-502), enabling code execution through known .NET gadget chains. T+ is a widely-used Chinese ERP/accounting system.