SB2026090814 - Multiple vulnerabilities in IBM DataStage on Cloud Pak for Data

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026090814

SB2026090814 - Multiple vulnerabilities in IBM DataStage on Cloud Pak for Data

Published: September 8, 2026

Security Bulletin ID SB2026090814
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2026-27459)

CWE-ID: CWE-120 - Buffer overflow

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists because the callback provided to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, causing pyOpenSSL to overflow an OpenSSL-provided buffer. A remote attacker can pass specially crafted data to the application, trigger a buffer overflow and execute arbitrary code on the target system.


2) Out-of-bounds read (CVE-ID: CVE-2026-39892)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to out-of-bounds read in Python buffer-accepting APIs when processing a non-contiguous buffer. A local user can pass a specially crafted non-contiguous buffer to cause a denial of service.

The issue can read past the end of the buffer on Python versions later than 3.11.


Remediation

Install update from vendor's website.

References