CVE-2020-4280

highpriority · attend · 59EPSS 0.685 · 99 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

68.5% (99th) EPSS

CVSS 9 · high

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

IBM QRadar SIEM 7.3 and 7.4 could allow a remote attacker to execute arbitrary commands on the system, caused by insecure deserialization of user-supplied content by the Java deserialization function. By sending a malicious serialized Java object, an attacker could exploit this vulnerability to execute arbitrary commands on the system. IBM X-Force ID: 176140.

cvss

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

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.3–9

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.06.3mediumCVSS:3.0/AC:L/A:L/I:L/C:L/PR:L/UI:N/S:U/AV:N/E:U/RC:C/RL:Osecondary · ENISA EU

v3.06.3mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lsecondary · psirt@us.ibm.com USexploitability 2.8 · impact 3.4

v3.16.3mediumAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-502US

affected products (9)

Products and version ranges known to be affected.

IBM QRadar SIEM≤ 7.3.3.Patch.4enisa_euvdEU
IBM QRadar SIEM≤ 7.4.1enisa_euvdEU
IBM QRadar SIEM≤ 7.4.0enisa_euvdEU
IBM QRadar SIEM≤ 7.3.0enisa_euvdEU
IBM Corp. IBM QRadar SIEM7.3.0 → 7.3.3 Patch 4fstec_bduRU
IBM Corp. IBM QRadar SIEM7.4.0 → 7.4.1 GAfstec_bduRU
ibm qradar security information and event manager7.3.0 → 7.3.3nvdUScpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*
ibm qradar security information and event manager= 7.3.3nvdUScpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*
ibm qradar security information and event manager7.4.0 → 7.4.1nvdUScpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2020-10-08modified 2026-06-17

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+3739 more

references (15)

External citations — patches, advisories, analysis.

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