High · CVSS 8.1CVE-2026-84725

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

Answer in brief

CVE-2026-84725 records a High severity (CVSS 8.1) vulnerability in Openjdk-orb: incomplete fix for cve-2026-15560,unauthed class loading via iiop in eap. The current sources do not mark it as known exploited. The current feed maps Red Hat/openjdk-orb (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 28, 2026Updated Oct 28, 2026Source checked Oct 28, 2026First seen by HOL Oct 28, 2026Material review Oct 28, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/openjdk-orb (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/openjdk-orbgeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/openjdk-orb.
Review the reported fix. Source-reported 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.

Evidence timeline and material changes

Published upstream
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 28, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Package

Affected range

Fixed version

Red Hat/openjdk-orbgeneric

Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/openjdk-orb.

Review the reported fix. Source-reported 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.

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.