Security readout for executives and security teams
Plain-English summary
CVE-2020-4310 is a denial-of-service issue in IBM MQ and MQ Appliance. A remote unauthenticated attacker could affect availability through an error in Data Conversion logic. The public record rates it medium severity, with high attack complexity and no stated confidentiality or integrity impact.
Executive priority
Treat as a moderate operational-risk item. It is not reported as actively exploited, but MQ often supports business-critical workflows, so unresolved affected deployments should be tracked and remediated through normal vulnerability management timelines.
Technical view
IBM MQ 8.0, 9.0 LTS, 9.1 LTS, 9.1 CD, and WebSphere MQ 7.1/7.5 are listed as affected. CVSS v3.0 is 5.9: network reachable, unauthenticated, no user interaction, high complexity, availability high, confidentiality and integrity none.
Likely exposure
Exposure is most likely where affected IBM MQ or MQ Appliance versions remain deployed and reachable over a network. Business impact centers on service disruption to messaging-dependent applications, especially systems using MQ for integration between critical workloads.
Exploitation context
The provided CVSS vector lists exploit maturity as unproven, and the CVE is not marked in CISA KEV. The sources do not support a claim of active exploitation. Attack complexity is high, which reduces likelihood but not operational impact if exploited.
Researcher notes
Evidence is limited to the CVE record, IBM advisory reference, and X-Force entry. The root cause is described only as Data Conversion logic error. Do not assume specific crash conditions, affected configurations, or exploitability beyond the stated CVSS vector.
Mitigation direction
- Identify all IBM MQ and MQ Appliance deployments and versions.
- Review IBM advisory 6223914 for official remediation and fix-pack guidance.
- Prioritize upgrades or vendor-recommended fixes for internet-reachable or critical messaging systems.
- Restrict network access to MQ services to trusted systems where operationally feasible.
- Monitor MQ availability and errors related to data conversion failures.
Validation and detection
- Confirm whether deployed versions match the affected IBM MQ and WebSphere MQ ranges.
- Check vendor advisory status against each installed MQ release and maintenance level.
- Verify exposed MQ services are limited to expected trusted networks.
- Review monitoring for unexplained MQ outages, crashes, or availability degradation.
- Document remediation status for each affected environment.
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.
CVE-2020-4310 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
- 5.9 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/I:N/PR:N/S:U/A:H/UI:N/C:N/E:U/RC:C/RL:O
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/AV:N/AC:H/I:N/PR:N/S:U/A:H/UI:N/C:N/E:U/RC:C/RL:O2.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.9MediumVector: CVSS:3.0/AV:N/AC:H/I:N/PR:N/S:U/A:H/UI:N/C:N/E:U/RC:C/RL:O
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6223914CVE reference · x_refsource_CONFIRM
- ibm-mq-cve20204310-dos (177081)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.