---
title: "CVE-2026-84725: OpenJDK ORB - Remote Code Execution"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-84725/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-84725)

## 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](https://cwe.mitre.org/data/definitions/829.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-84725](https://nvd.nist.gov/vuln/detail/CVE-2026-84725)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=2527228](https://bugzilla.redhat.com/show_bug.cgi?id=2527228)
- [https://access.redhat.com/security/cve/CVE-2026-84725](https://access.redhat.com/security/cve/CVE-2026-84725)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)