Security readout for executives and security teams
Plain-English summary
This issue affects IBM QRadar SIEM versions 7.3, 7.4, and 7.5. It is a local privilege escalation weakness, meaning an attacker with local access could potentially gain higher control if other conditions or vulnerabilities are present. The business concern is elevated access on a core security monitoring platform.
Executive priority
Treat this as a high-priority platform hardening item, not an internet-wide emergency. QRadar often has sensitive security visibility and elevated trust, so compromise could undermine detection, incident response, and operational confidence.
Technical view
IBM describes CVE-2021-39088 as local privilege escalation in QRadar SIEM 7.3, 7.4, and 7.5. The CVSS 3.0 score is 7.4 high, with local attack vector, high attack complexity, no user interaction, and high confidentiality, integrity, and availability impact. The description suggests chaining may be required.
Likely exposure
Organizations running IBM QRadar SIEM 7.3, 7.4, or 7.5 may be exposed, especially where local access to QRadar hosts is possible or another vulnerability could provide that foothold.
Exploitation context
The provided bundle does not show CISA KEV listing or cited active exploitation. The CVSS temporal metric marks exploit code maturity as unproven, but the impact remains serious because QRadar is a high-value security platform.
Researcher notes
Evidence is limited to the CVE record, IBM advisory reference, and IBM X-Force entry. The vulnerability is local and high-complexity, with the public description explicitly referencing possible combination with other unknown vulnerabilities. No CWE, affected CPEs, exploit details, or fixed build numbers are provided in the bundle.
Mitigation direction
- Identify all QRadar SIEM 7.3, 7.4, and 7.5 deployments.
- Review IBM support advisory 6607129 for official remediation guidance.
- Apply IBM-provided fixes or upgrades; do not rely on inferred version fixes.
- Restrict local access to QRadar appliances and management hosts.
- Prioritize monitoring for unusual privilege changes on QRadar systems.
Validation and detection
- Confirm QRadar version and patch level against IBM advisory guidance.
- Check asset inventory for QRadar 7.3, 7.4, and 7.5 hosts.
- Review QRadar host access paths for unnecessary local or shell access.
- Inspect logs for unexpected privilege changes or administrative account activity.
- Document remediation status for each affected QRadar deployment.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-39088 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/I:H/A:H/PR:N/C:H/AC:H/S:U/AV:L/UI:N/E:U/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/I:H/A:H/PR:N/C:H/AC:H/S:U/AV:L/UI:N/E:U/RL:O/RC:C1.45.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.4HighVector: CVSS:3.0/I:H/A:H/PR:N/C:H/AC:H/S:U/AV:L/UI:N/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6607129CVE reference · x_refsource_CONFIRM
- ibm-qradar-cve202139088-priv-escalation (216111)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.