CVE-2026-84725 OpenJDK ORB - Remote Code Execution

OpenJDK ORB JDKBridge contains a remote code execution caused by honoring attacker-supplied CDR codebase URLs during object unmarshalling on port 3528, letting unauthenticated attackers load and instantiate arbitrary classes remotely before EJB security interceptors run.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
28 October 2026
Updated
29 October 2026
Weakness
CWE-829

Vendor fix

Update to the latest version of OpenJDK ORB that addresses this vulnerability.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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