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java-1.8.0-ibm: Arbitrary class loading and instantiation via malicious IIOP server

🗓️ 10 Aug 2026 16:49:43Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 11 Views

Malicious IIOP server exploits IBM SDK Java ORB to load arbitrary classes and execute code.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10ppc64lejava-1.8.0-ibm1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xjava-1.8.0-ibm1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64java-1.8.0-ibm1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10ppc64lejava-1.8.0-ibm-demo1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-demo-1:1.8.0.8.70-1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xjava-1.8.0-ibm-demo1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-demo-1:1.8.0.8.70-1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64java-1.8.0-ibm-demo1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-demo-1:1.8.0.8.70-1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10ppc64lejava-1.8.0-ibm-devel1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-devel-1:1.8.0.8.70-1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xjava-1.8.0-ibm-devel1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-devel-1:1.8.0.8.70-1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64java-1.8.0-ibm-devel1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-devel-1:1.8.0.8.70-1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10ppc64lejava-1.8.0-ibm-headless1:1.8.0.8.70-1.el8_10java-1.8.0-ibm-headless-1:1.8.0.8.70-1.el8_10.ppc64le.rpm
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18 Aug 2026 19:32Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.18.1 - 9.8
EPSS0.00274
SSVC
CWE-470
IBM SDK JavaIIOP protocolORB componentarbitrary code executionclass loading
11