CVE-2020-4450
CRITICALCVSS 9.8/10EPSS 33.94%
Last modified
CVE-2020-4450 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.. EPSS estimates a 33.94% chance of exploitation in the next 30 days.
Description
IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Websphere Application Server | >= 8.5.0.0, < 8.5.5.18 |
| Ibm | Websphere Application Server | >= 9.0.0.0, < 9.0.5.5 |
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/181231VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6220294Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-689/Third Party Advisory, VDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/181231VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6220294Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-689/Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-4450?
IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.
How severe is CVE-2020-4450?
CVE-2020-4450 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 33.94% probability of exploitation in the next 30 days.
How do I fix CVE-2020-4450?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-4450?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST