Security readout for executives and security teams
Plain-English summary
This vulnerability can let a low-privileged network user disrupt IBM MQ service availability by sending poorly formatted messages through MQ channels. It is not described as data theft or code execution. Business impact is interruption of message-driven operations where affected IBM MQ or MQ Appliance versions support critical workflows.
Executive priority
Prioritize remediation where IBM MQ underpins critical business workflows. The flaw is moderate severity, but outages in message queues can cascade into transaction delays, operational backlogs, or integration failures. No active exploitation is evidenced in the supplied sources.
Technical view
CVE-2019-4560 affects IBM MQ and IBM MQ Appliance 8.0, 9.0 LTS, and 9.1 LTS/CD. The issue is a denial of service condition in channel processing of poorly formatted messages. CVSS v3.0 is 5.3, with network access, low privileges, high attack complexity, no user interaction, and high availability impact.
Likely exposure
Exposure is most likely in environments running the affected IBM MQ or IBM MQ Appliance versions with MQ channels reachable by authenticated users over the network. Systems using MQ for payment, ordering, integration, or operational messaging may face higher business urgency.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The CVSS temporal metric lists exploit code maturity as unproven. Treat this as a service-availability risk requiring authenticated network access, not as evidence of widespread exploitation.
Researcher notes
Key constraints are AV:N, PR:L, AC:H, UI:N, and A:H. The weakness is described only as channel processing of poorly formatted messages; no CWE, packet detail, exploit procedure, or fixed-version list is provided in the bundle. Avoid assuming unauthenticated reachability.
Mitigation direction
- Review IBM advisory 1106037 and X-Force 166357 for official remediation guidance.
- Upgrade or apply IBM-provided fixes for affected MQ and MQ Appliance versions.
- Restrict MQ channel access to trusted authenticated users and required network paths.
- Prioritize systems supporting critical business message flows or external integrations.
Validation and detection
- Inventory IBM MQ and MQ Appliance versions across production and disaster recovery environments.
- Identify MQ channels reachable over the network and their authentication requirements.
- Confirm whether listed affected versions are present in any active environment.
- Check monitoring for unexplained MQ channel failures or service availability drops.
- Verify remediation status against IBM advisory guidance, not inferred version assumptions.
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-2019-4560 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
- 5.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/C:N/AC:H/S:U/UI:N/AV:N/PR:L/A:H/I: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/C:N/AC:H/S:U/UI:N/AV:N/PR:L/A:H/I:N/E:U/RC:C/RL:O1.63.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.3MediumVector: CVSS:3.0/C:N/AC:H/S:U/UI:N/AV:N/PR:L/A:H/I:N/E:U/RC:C/RL:O
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/1106037CVE reference · x_refsource_CONFIRM
- ibm-mq-cve20194560-dos (166357)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.