CVE-2021-20337
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...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2021-20337- CVSS 3.0
- 5.9 Medium
CVSS:3.0/S:U/PR:N/AV:N/UI:N/C:H/AC:H/I:N/A:N/RC:C/E:U/RL:O - Updated
- 2026-11-02
EUVDEUVD-2021-7755
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.
- Record
EUVD-2021-7755- CVSS 3.0
- 5.9 Medium
CVSS:3.0/S:U/PR:N/AV:N/UI:N/C:H/AC:H/I:N/A:N/RC:C/E:U/RL:O - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8g6p-5f49-wrw9
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...
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.
- Record
GHSA-8g6p-5f49-wrw9- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-326
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-20337- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-327
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20337 is a medium vulnerability (CVSS 5.9) in Ibm Qradar Siem, published July 26, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. No source names a fixed version.