Security readout for executives and security teams
Plain-English summary
CVE-2020-4352 affects IBM MQ for HPE NonStop versions 8.0.4 and 8.1.0 when running in restricted mode. It can allow privilege escalation, but the published CVSS score is medium and the attack is local with high complexity. Treat it as important for any HPE NonStop MQ deployment, not a broad internet-facing emergency.
Executive priority
Prioritize this for environments that actually run IBM MQ on HPE NonStop. It is a medium-severity, local privilege escalation issue with limited impact metrics, but systems using MQ often support important business workflows. Remediate through IBM guidance during normal security maintenance unless local access risk is elevated.
Technical view
The CVE describes a privilege escalation flaw in IBM MQ on HPE NonStop 8.0.4 and 8.1.0 in restricted mode. The CVSS 3.0 vector is AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L, indicating local access, high complexity, no user interaction, unchanged scope, and limited confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to organizations running IBM MQ for HPE NonStop versions 8.0.4 or 8.1.0, specifically where restricted mode is used. The source bundle does not identify other IBM MQ platforms or versions as affected.
Exploitation context
The provided sources do not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates exploitation requires local access and high complexity, which reduces broad opportunistic risk but still matters on sensitive NonStop systems.
Researcher notes
The bundle provides product, versions, restricted-mode condition, CVSS, and IBM X-Force ID 178427, but not root cause detail or exploitation specifics. Do not assume exploit availability or broader IBM MQ exposure without additional vendor evidence.
Mitigation direction
- Identify IBM MQ for HPE NonStop 8.0.4 and 8.1.0 deployments.
- Review IBM advisory node 6217600 for the official fix or maintenance guidance.
- Prioritize remediation where restricted mode is enabled.
- Monitor IBM X-Force vulnerability 178427 for vendor updates.
- Apply only IBM-supported updates or configuration changes.
Validation and detection
- Confirm IBM MQ product and version on each HPE NonStop system.
- Check whether the deployment runs in restricted mode.
- Verify installed fix level against IBM advisory guidance.
- Document any affected systems awaiting vendor-approved remediation.
- Review local access controls on affected NonStop hosts.
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-2020-4352 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
- Medium
- CVSS
- 4.9 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/UI:N/S:U/AV:L/PR:N/A:L/AC:H/C:L/I:L/RC:C/RL:O/E:U
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/UI:N/S:U/AV:L/PR:N/A:L/AC:H/C:L/I:L/RC:C/RL:O/E:U1.43.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.9MediumVector: CVSS:3.0/UI:N/S:U/AV:L/PR:N/A:L/AC:H/C:L/I:L/RC:C/RL:O/E:U
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6217600CVE reference · x_refsource_CONFIRM
- ibm-mq-cve20204352-priv-escalation (178427)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.