Missing initialization of resource in IBM ILOG CPLEX Optimization Studio (COS)

Published: 2022-11-25
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-28167
Exploitation vector Network
Public exploit N/A
Vulnerable software
IBM ILOG CPLEX Optimization Studio (COS)
Server applications / Other server solutions

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Missing initialization of resource

EUVDB-ID: #VU60084

Risk: Medium


CVE-ID: CVE-2021-28167

CWE-ID: CWE-909 - Missing initialization of resource

Exploit availability: No


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to usage of the jdk.internal.reflect.ConstantPool API causes the JVM in some cases to pre-resolve certain constant pool entries. This allows a user to call static methods or access static members without running the class initialization method. A remote attacker can send a specially crafted request to the application and observe uninitialized values.


Install update from vendor's website.

Vulnerable software versions

IBM ILOG CPLEX Optimization Studio (COS): 12.8 - 22.1

CPE2.3 External links


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?