Multiple Vulnerabilities in IBM® Java SDK affect IBM WebSphere Application Server and…
Priority MEDIUM 43CWE-470Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty Continuous delivery has a flaw in the ORB component in IBM SDK, Java Technology Edition, may allow a malicious IIOP server to induce loading and instantation of arbitrary classes.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00481 41st percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | WebSphere Application Server | 8.5; 9.0 | — | No fix listed | CNA |
| IBM | WebSphere Application Server - Liberty | Continuous delivery | — | No fix listed | CNA |
- WebSphere Application Server VendorIBM Affected 8.5; 9.0 Fixed in — No fix listed CNA
- WebSphere Application Server - Liberty VendorIBM Affected Continuous delivery Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:websphere_application_server:-:*:*:*:liberty:*:*:* | not specified by NVD | Vulnerable | IBM |
| cpe:2.3:a:ibm:websphere_application_server:8.5.0.0:*:*:*:-:*:*:* | 8.5.0.0 | Vulnerable | IBM |
| cpe:2.3:a:ibm:websphere_application_server:9.0.0.0:*:*:*:-:*:*:* | 9.0.0.0 | Vulnerable | IBM |
- cpe:2.3:a:ibm:websphere_application_server:-:*:*:*:liberty:*:*:* Versions not specified by NVD Vulnerable ·IBM
- cpe:2.3:a:ibm:websphere_application_server:8.5.0.0:*:*:*:-:*:*:* Versions 8.5.0.0 Vulnerable ·IBM
- cpe:2.3:a:ibm:websphere_application_server:9.0.0.0:*:*:*:-:*:*:* Versions 9.0.0.0 Vulnerable ·IBM
Remediation
Red Hat 1 advisory
- RHSA-2026:52949 Released 2026-08-10 · Red Hat rating Importantjava-1.8.0-ibm security update
- Red Hat Enterprise Linux Supplementary (v. 8) java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10, java-1.8.0-ibm-demo-1:1.8.0.8.70-1.el8_10, java-1.8.0-ibm-devel-1:1.8.0.8.70-1.el8_10 +5
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Supplementary (v. 8) | Fixed | RHSA-2026:52949 |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8400
- 2026-10-03 Alias added: GHSA-m4rx-9mrh-59g9
References
More IBM Websphere Application Server vulnerabilities
- TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
- TI-2010-00403 modules/arch/win32/mod_isapi.c in mod_isapi in the Apache HTTP Server 2.0.37 through… CVSS 2.0HIGH 10.0
- TI-2019-03185 Deserialization of untrusted data in IBM WebSphere Application Server CVSS 3.1CRITICAL 9.8
- TI-2020-03809 Deserialization of untrusted data in IBM WebSphere Application Server CVSS 3.1CRITICAL 9.8
- TI-2025-24648 IBM WebSphere Application Server code execution CVSS 3.1CRITICAL 9.8
- TI-2020-03807 Deserialization of untrusted data in IBM WebSphere Application Server CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-8400 · CVE Program
- CVE-2026-8400 · NVD
- FIRST EPSS
- GHSA-m4rx-9mrh-59g9 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-8400 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences