CVE-2020-4450 in the critical feed json
IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a speci…
published 2020-06-05 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25697
- cvss
- 9.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 34.7%
- EPSS 34.7% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
34.73% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 9.8 | CVSS:3.0/UI:N/AV:N/C:H/PR:N/AC:L/I:H/S:U/A:H/RL:O/E:U/RC:C |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- IBM WebSphere Application Server
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
ibm.com
/support/pages/node/6220294
patch, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/181231
vdb-entry, vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-20-689/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2020-4450
- NVD CVE-2020-4450
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