SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-36038

IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially crafted sequence of serialized objects.

CRITICAL 9.8EPSS 9.79%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (9.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially crafted sequence of serialized objects.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
9.79% probability · 95th percentile
CISA KEV
Not listed
Weakness
CWE-502
Affected
ibm/websphere application server
Source
psirt@us.ibm.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.