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CVE-2017-12149

Critical 9.8 Exploited in the wild (KEV) Used in ransomware campaigns

Confirmed active exploitation — CISA KEV catalog

Name
Red Hat JBoss Application Server Remote Code Execution Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply updates per vendor instructions.

Description

In Jboss Application Server as shipped with Red Hat Enterprise Application Platform 5.2, it was found that the doFilter method in the ReadOnlyAccessFilter of the HTTP Invoker does not restrict classes for which it performs deserialization and thus allowing an attacker to execute arbitrary code via crafted serialized data.

Metrics

CVSS 3.1
9.8 (CRITICAL) Score source: NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
91% (percentile: 100) as of 1 November 2026
CWE
CWE-502

Affected products

redhat: jboss enterprise application platform

References