CVE-2020-4509

mediumpriority · track · 31EPSS 0.015 · 75 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.53% (75th) EPSS

CVSS 5.5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

IBM QRadar SIEM 7.3 and 7.4 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 182364.

cvss

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

7.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–7.6

v2.05.5mediumAV:N/AC:L/Au:S/C:P/I:N/A:Pprimary · NVD / NIST USexploitability 8 · impact 4.9

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:Lprimary · NVD / NIST USexploitability 2.3 · impact 4.7

v3.07.6highCVSS:3.0/PR:H/UI:N/A:L/S:C/AC:L/I:N/AV:N/C:H/RL:O/RC:C/E:Usecondary · ENISA EU

v3.07.6highCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:Lsecondary · psirt@us.ibm.com USexploitability 2.3 · impact 4.7

v3.17highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-611USprimary

affected products (4)

Products and version ranges known to be affected.

IBM QRadar SIEM≤ 7.4enisa_euvdEU
IBM QRadar SIEM≤ 7.3enisa_euvdEU
ibm qradar security information and event manager= 7.3.0nvdUScpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*
ibm qradar security information and event manager= 7.4.0nvdUScpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*

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 2020-06-04modified 2026-06-17

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+1515 more

references (10)

External citations — patches, advisories, analysis.

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