SB2026082843 - Multiple vulnerabilities in IBM InfoSphere Information Server

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Main Vulnerability Database SB2026082843

SB2026082843 - Multiple vulnerabilities in IBM InfoSphere Information Server

Published: August 28, 2026

Security Bulletin ID SB2026082843
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Deserialization of Untrusted Data (CVE-ID: CVE-2021-25642)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to ZKConfigurationStore which is optionally used by CapacityScheduler of Apache Hadoop YARN deserializes data obtained from ZooKeeper without validation. A remote user with an access to ZooKeeper can run arbitrary commands as YARN user by exploiting this vulnerability.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-33036)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to improper permission assignment, which leads to security restrictions bypass and privilege escalation.


Remediation

Install update from vendor's website.

References