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  4. CVE 2026 15564 wildfly ejb wildfly iiop openjdk eap iiop
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Back to active CVEs
High · CVSS 7.4CVE-2026-15564

Wildfly-ejb: wildfly-iiop-openjdk: eap iiop listeners may permit unauthed deserializationCVE-2026-15564

Answer in brief

CVE-2026-15564 records a High severity (CVSS 7.4) vulnerability in Wildfly-ejb: wildfly-iiop-openjdk: eap iiop listeners may permit unauthed deserialization. The current sources do not mark it as known exploited. The current feed maps Red Hat/wildfly-ejb3 (generic), Red Hat/wildfly-iiop-openjdk (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 29, 2026Updated Oct 29, 2026Source checked Oct 29, 2026First seen by HOL Oct 29, 2026Material review Oct 29, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.4
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.4. 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/wildfly-ejb3 (generic), Red Hat/wildfly-iiop-openjdk (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/wildfly-ejb3generic*Not reported
Red Hat/wildfly-iiop-openjdkgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/wildfly-ejb3, Red Hat/wildfly-iiop-openjdk.
  2. 2Review the reported fix. Source-reported workaround: Restrict network reachability to the IIOP listener (default TCP port 3528) so that only localhost or authorized management networks can access it. 1. Restrict port exposure using firewalld: ```bash firewall-cmd --permanent --remove-port=3528/tcp firewall-cmd --reload ``` 2. If CORBA/IIOP interoperability is not required by deployed applications, remove the IIOP subsystem using the JBoss Management CLI: ```bash jboss-cli.sh --connect --command="/subsystem=iiop-openjdk:remove" ``` Caveats: Removing the IIOP subsystem will break remote EJB invocations or external services that rely on CORBA/IIOP protocols. Warning: Applying firewall changes or removing server subsystems will disrupt active client connections and requires reloading the server configuration or restarting the JBoss EAP service to take full effect.

Evidence timeline and material changes

  1. Published upstream

    Oct 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 29, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

Wildfly's IIOP listener may permit deserialization of input streams before authentication is performed. An attacker who can gain access to the IIOP port may be able to construct and send malicious objects and achieve deserialization, if the target EJB allows untyped method parameters, and depending on the potential gadget chains available in the running classpath.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Wildfly: wildfly-iiop: wildfly-ejb3: wildfly: authentication bypass on iiop ejb invocations as csiv2 ittprincipalname accepted without transport bindingSame red hat/wildfly-iiop-openjdk package

Record context

Vulnerability class
Deserialization
EPSS
Not reported
CWE IDs
CWE-829
Source
CVE List V5
Source checked
Oct 29, 2026
References
2 linked sources
Open source record