Vulnerability in Red Hat Jboss Enterprise Application Platform 7
CVE-2026-15554
the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP protocol.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Red Hat Jboss Enterprise Application Platform 7
- Red Hat Jboss Enterprise Application Platform 7.4.25
- Red Hat Jboss Enterprise Application Platform 7.4 Els On Rhel 7 — versions 0:2.16.0-22.redhat_00057.1.el7eap, 0:2.3.14-11.SP11_redhat_00001.1.el7eap, 0:1.5.26-2.Final_redhat_00001.1.el7eap
- Red Hat Jboss Enterprise Application Platform 8
- Red Hat Jboss Enterprise Application Platform Expansion Pack
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-15554 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:53644 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:53806 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:53645 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:53646 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:70228 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:70229 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:70230 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:70277 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-15554?
- CVE-2026-15554 is a high-severity vulnerability in Red Hat Jboss Enterprise Application Platform 7, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-08-11.
- How severe is CVE-2026-15554?
- High severity. CVSS v3 base score is 7.4 out of 10.