CVE-2026-13759: websphere extreme scale from 8.6.1.0 (inclusive), through 8.6.1.6 (inclusive); +1 more affected products

Affected technology

websphere extreme scale · from 8.6.1.0 (inclusive), through 8.6.1.6 (inclusive)
ibm

WebSphere Extreme Scale · 8.6.1.0 through 8.6.1.6
IBM

Description’s affected range: through 8.6.1.6 ships three ObjectInputStream subclasses (WsObjectInputStream

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

The source reports that an attacker could run attacker-chosen code under the conditions described by the source. Vendor/CNA’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality, integrity and availability impact as high. NVD’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high.