CVE-2021-20337

mediumpriority · track · 30OT risk · elevatedEPSS 0.007 · 53 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.71% (53rd) EPSS

CVSS 5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

IBM QRadar SIEM 7.3.0 to 7.3.3 Patch 8 and 7.4.0 to 7.4.3 GA uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 194448.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.05.9mediumCVSS:3.0/S:U/PR:N/AV:N/UI:N/C:H/AC:H/I:N/A:N/RC:C/E:U/RL:Osecondary · ENISA EU

v3.05.9mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · psirt@us.ibm.com USexploitability 2.2 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-327USprimary

affected products (9)

Products and version ranges known to be affected.

IBM QRadar SIEM 7.5all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.5
IBM QRadar SIEM≤ 7.3.0enisa_euvdEU
IBM QRadar SIEM≤ 7.3.Patch.8enisa_euvdEU
IBM QRadar SIEM≤ 7.4.3enisa_euvdEU
IBM QRadar SIEM≤ 7.4.0enisa_euvdEU
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 → 7.4.3nvdUScpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*
ibm qradar security information and event manager= 7.4.3nvdUScpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-1872IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2021-07-25csaf · cert_bundDE
Ein entfernter anonymer oder authentifizierter Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen, Dateien zu manipulieren, einen Denial-of-Service-Zustand auszulösen und einen Cross-Site-Scripting-Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2021-07-26modified 2026-06-17

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+913 more

references (10)

External citations — patches, advisories, analysis.

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