Deserialization of untrusted data in IBM WebSphere Application Server
Priority MEDIUM 56CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-502.
Summary
IBM WebSphere Application Server Network Deployment 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects from untrusted sources. IBM X-Force ID: 181228.
Why it matters now
EPSS 0.12521 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | WebSphere Application Server | 7.0; 8.0; 8.5; 9.0 | — | No fix listed | CNA |
- WebSphere Application Server VendorIBM Affected 7.0; 8.0; 8.5; 9.0 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:* | 8.5.0.0 to before 8.5.5.18; 9.0.0.0 to before 9.0.5.4 | Vulnerable | IBM |
| cpe:2.3:a:ibm:websphere_virtual_enterprise:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | IBM |
| cpe:2.3:a:ibm:websphere_virtual_enterprise:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | IBM |
- cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:* Versions 8.5.0.0 to before 8.5.5.18; 9.0.0.0 to before 9.0.5.4 Vulnerable ·IBM
- cpe:2.3:a:ibm:websphere_virtual_enterprise:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·IBM
- cpe:2.3:a:ibm:websphere_virtual_enterprise:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·IBM
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-4448
- 2026-10-03 Alias added: GHSA-8p6x-q5g6-57qh
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-2013-01564 The JMX Remoting functionality in Apache Geronimo 3.x before 3.0.1, as used in IBM… CVSS 2.0HIGH 10.0
Sources
- CVE-2020-4448 · CVE Program
- CVE-2020-4448 · NVD
- FIRST EPSS
- GHSA-8p6x-q5g6-57qh · GitHub Advisory Database · CC BY 4.0
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