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TI-2026-82283 Aliases CVE-2026-15564GHSA-89hx-fmwj-cww5

Deserialization before authentication in WildFly IIOP listener

Priority LOW 33CWE-829Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-829.

Summary

WildFly's IIOP listener in Red Hat JBoss Enterprise Application Platform may deserialize input streams before authentication is performed. An attacker who can reach the IIOP port can send malicious serialized objects, which can lead to code execution if the target EJB accepts untyped method parameters and suitable gadget chains exist on the classpath, a flaw tied to CWE-829.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00141 3rd percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat JBoss Enterprise Application Platform 8.1——Not affectedCNA
Red HatRed Hat JBoss Enterprise Application Platform 7——No fix listedCNA
Red HatRed Hat JBoss Enterprise Application Platform 7——Not affectedCNA
Red HatRed Hat JBoss Enterprise Application Platform 8——No fix listedCNA
  • Red Hat JBoss Enterprise Application Platform 8.1 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat JBoss Enterprise Application Platform 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat JBoss Enterprise Application Platform 7 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat JBoss Enterprise Application Platform 8 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 3

CPEVersionsRoleVendor
cpe:/a:redhat:jboss_enterprise_application_platform:8.18.1—Red Hat
cpe:/a:redhat:jboss_enterprise_application_platform:77—Red Hat
cpe:/a:redhat:jboss_enterprise_application_platform:88—Red Hat
  • cpe:/a:redhat:jboss_enterprise_application_platform:8.1 Versions 8.1 — ·Red Hat
  • cpe:/a:redhat:jboss_enterprise_application_platform:7 Versions 7 — ·Red Hat
  • cpe:/a:redhat:jboss_enterprise_application_platform:8 Versions 8 — ·Red Hat

Remediation

Red Hat JBoss Enterprise Application Platform 8.1 is fixed in the 8.1.9 security update, RHSA-2026:95887. The sources list no fixed version for Red Hat JBoss Enterprise Application Platform 7. The sources list no fixed version for Red Hat JBoss Enterprise Application Platform 8.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Red Hat 1 advisory

  • RHSA-2026:95887 Released 2026-11-06 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 8.1.9 security update
    • Red Hat JBoss Enterprise Application Platform 8.1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat JBoss Enterprise Application Platform 7AffectedNo fix yet
Red Hat JBoss Enterprise Application Platform 8AffectedNo fix yet
Red Hat JBoss Enterprise Application Platform 8.1Fixed RHSA-2026:95887
Not affected: 1 product
  • Red Hat JBoss Enterprise Application Platform 7

Timeline

  1. 2026-10-29 Threatist record created from CVE-2026-15564
  2. 2026-10-29 Alias added: GHSA-89hx-fmwj-cww5
  3. 2026-10-29 CISA SSVC decision points changed
  4. 2026-10-29 Priority changed: MEDIUM → LOW
  5. 2026-11-06 Affected versions changed · CNA
  6. 2026-11-06 1 new reference · CNA
  7. 2026-11-06 Fix available: RHSA-2026:95887 · Red Hat
  8. 2026-11-06 Fix available: Red Hat JBoss Enterprise Application Platform 8.1 · Red Hat

References

Advisory 1

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences