Vulnerability Details CVE-2026-9002
IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to improper validation in the XDF decoder. The application processes deeply nested Protocol Buffers messages and attacker-controlled length prefixes without sufficient bounds checking, which may allow an attacker on the same network to trigger a StackOverflowError or OutOfMemoryError, resulting in a crash of the WebSphere Application Server JVM.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 18.5%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-9002
-
cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.0
-
cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.1
-
cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.2
-
cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.3
-
cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.4