CVE-2020-4448

highpriority · track · 43EPSS 0.125 · 96 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

12.5% (96th) EPSS

CVSS 10 · high

Is it mine?

8 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-21

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/S:U/I:H/A:H/UI:N/AC:L/PR:N/C:H/AV:N/RC:C/E:U/RL:Osecondary · ENISA EU

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@us.ibm.com USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimary

affected products (8)

Products and version ranges known to be affected.

IBM WebSphere Application Server≤ 8.0enisa_euvdEU
IBM WebSphere Application Server≤ 7.0enisa_euvdEU
IBM WebSphere Application Server≤ 9.0enisa_euvdEU
IBM WebSphere Application Server≤ 8.5enisa_euvdEU
ibm websphere application server8.5.0.0 → 8.5.5.18nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere application server9.0.0.0 → 9.0.5.4nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere virtual enterprise= 7.0nvdUScpe:2.3:a:ibm:websphere_virtual_enterprise:*:*:*:*:*:*:*:*
ibm websphere virtual enterprise= 8.0nvdUScpe:2.3:a:ibm:websphere_virtual_enterprise:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-06-05modified 2026-06-17

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+3653 more

references (20)

External citations — patches, advisories, analysis.

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