# CVE-2026-84725: Openjdk-orb: incomplete fix for cve-2026-15560,unauthed class loading via iiop in eap

Status: published. Published: 2026-10-28. Updated: 2026-11-11.

when EAP runs with -secmgr, the openjdk-orb's JDKBridge honours attacker-supplied CDR codebase URLs during object unmarshalling on :3528, allowing an unauthenticated attacker to load and instantiate arbitrary classes from a remote URL in the server JVM before EJB security interceptors run.

## Remediation

- workaround: To mitigate this flaw, restrict access to the IIOP service (TCP port 3528) to trusted networks using firewall rules, or disable the IIOP subsystem if CORBA is not required by deployed applications.

To restrict or remove external access to port 3528 using firewalld:
```
firewall-cmd --permanent --remove-port=3528/tcp
firewall-cmd --reload
```

Warning: Reloading the firewall configuration may briefly interrupt network traffic. If removing the iiop-openjdk subsystem from the JBoss EAP configuration (standalone.xml or domain.xml), a full server restart is required, causing temporary service downtime.

Caveats: Blocking port 3528 or disabling the IIOP subsystem will prevent legitimate remote clients from communicating over IIOP/CORBA (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 (openjdk-orb): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-apache-cxf): ≥ 0:3.5.11-2.SP2_redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jackson-annotations): ≥ 0:2.18.10-1.redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jackson-core): ≥ 0:2.18.10-1.redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jackson-databind): ≥ 0:2.18.10-1.redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jackson-jaxrs-providers): ≥ 0:2.18.10-1.redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jackson-modules-base): ≥ 0:2.18.10-1.redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jackson-modules-java8): ≥ 0:2.18.10-1.redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jboss-server-migration): ≥ 0:1.10.0-47.Final_redhat_00045.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-jbossws-cxf): ≥ 0:5.4.18-1.Final_redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-undertow): ≥ 0:2.2.40-3.SP4_redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-wildfly): ≥ 0:7.4.26-5.GA_redhat_00002.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 (eap7-wildfly-elytron): ≥ 0:1.15.30-1.Final_redhat_00001.1.el7eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-apache-cxf): ≥ 0:3.5.11-2.SP2_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jackson-annotations): ≥ 0:2.18.10-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jackson-core): ≥ 0:2.18.10-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jackson-databind): ≥ 0:2.18.10-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jackson-jaxrs-providers): ≥ 0:2.18.10-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jackson-modules-base): ≥ 0:2.18.10-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jackson-modules-java8): ≥ 0:2.18.10-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jboss-server-migration): ≥ 0:1.10.0-47.Final_redhat_00045.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-jbossws-cxf): ≥ 0:5.4.18-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-undertow): ≥ 0:2.2.40-3.SP4_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-wildfly): ≥ 0:7.4.26-5.GA_redhat_00002.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 (eap7-wildfly-elytron): ≥ 0:1.15.30-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-apache-cxf): ≥ 0:3.5.11-2.SP2_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jackson-annotations): ≥ 0:2.18.10-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jackson-core): ≥ 0:2.18.10-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jackson-databind): ≥ 0:2.18.10-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jackson-jaxrs-providers): ≥ 0:2.18.10-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jackson-modules-base): ≥ 0:2.18.10-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jackson-modules-java8): ≥ 0:2.18.10-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jboss-server-migration): ≥ 0:1.10.0-47.Final_redhat_00045.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-jbossws-cxf): ≥ 0:5.4.18-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-undertow): ≥ 0:2.2.40-3.SP4_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-wildfly): ≥ 0:7.4.26-5.GA_redhat_00002.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 (eap7-wildfly-elytron): ≥ 0:1.15.30-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 (openjdk-orb): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: redhat

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: secalert@redhat.com

- CISA KEV: No listing in collected sources

- EPSS: 0.43% as of 2026-11-10; percentile 37.08%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-829

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:95887 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:99096 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:99097 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:99098 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:99099 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-84725 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2527228 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:95887 (secalert@redhat.com)

- https://access.redhat.com/security/cve/CVE-2026-84725 (secalert@redhat.com)

- https://bugzilla.redhat.com/show_bug.cgi?id=2527228 (secalert@redhat.com)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-84725; retrieved 2026-11-11; source updated 2026-11-11

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84725; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-84725; retrieved 2026-11-10; source updated Not reported

Revision: 48deb1f457d04fca82e9b865ebba42d9e94f67204b3ed72f4c334ec8896a651a

Canonical: https://y2.dev/cve/CVE-2026-84725

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