Deserialization in IBM Websphere Application Server
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.342 (98.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.342 · newest: 0.342 · change: 0.000
Affected products
- IBM Websphere Application Server — versions 8.5, 9.0
- IBM Websphere Application Server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ibm.com/support/pages/node/6220294 (Patch, Vendor Advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/181231 (VDB Entry, vdb-entry, Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-689/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-4450?
- CVE-2020-4450 is a critical-severity vulnerability in IBM Websphere Application Server, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-06-05.
- How severe is CVE-2020-4450?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-4450 known to be exploited?
- 16 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.