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CVE

CVE-2020-4450

IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the

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.

CRITICAL · CVSS 9.8 EPSS 0.71859
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-502Deserialization of Untrusted Data
▤

Affected Products & Versions

2
ibm websphere application server>= 8.5.0.0 and < 8.5.5.18
ibm websphere application server>= 9.0.0.0 and < 9.0.5.5
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · psirt@us.ibm.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Jun 2020 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://exchange.xforce.ibmcloud.com/vulnerabilities/181231VDB EntryVendor Advisory
https://www.ibm.com/support/pages/node/6220294PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-689/Third Party AdvisoryVDB Entry
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