CVE-2026-11381: CWE-122 Heap-based Buffer Overflow in IBM MQ for HPE NonStop
IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of message distribution list structures.
AI Analysis
Technical Summary
IBM MQ for HPE NonStop contains a heap-based buffer overflow vulnerability (CWE-122) due to improper validation of message distribution list structures. An authenticated attacker could exploit this flaw to cause denial of service or potentially execute arbitrary code. The affected versions are >=8.1.0 <=8.1.0.40. The CVSS v3.1 score is 8.8, indicating a high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Successful exploitation could lead to denial of service or arbitrary code execution by an authenticated attacker, impacting confidentiality, integrity, and availability of the IBM MQ service on HPE NonStop systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict access to trusted users only and monitor for unusual activity related to message distribution lists.
CVE-2026-11381: CWE-122 Heap-based Buffer Overflow in IBM MQ for HPE NonStop
Description
IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of message distribution list structures.
CVSS v3.1
Score 8.8high
Affected software
IBM
MQ for HPE NonStop
cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.1.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.1.0.40:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM MQ for HPE NonStop contains a heap-based buffer overflow vulnerability (CWE-122) due to improper validation of message distribution list structures. An authenticated attacker could exploit this flaw to cause denial of service or potentially execute arbitrary code. The affected versions are >=8.1.0 <=8.1.0.40. The CVSS v3.1 score is 8.8, indicating a high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Successful exploitation could lead to denial of service or arbitrary code execution by an authenticated attacker, impacting confidentiality, integrity, and availability of the IBM MQ service on HPE NonStop systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict access to trusted users only and monitor for unusual activity related to message distribution lists.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-06-05T12:53:41.576Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aad640855bf5e2cf53a6a46
Added to database: 09/18/2026, 16:17:12 UTC
Last enriched: 09/18/2026, 16:31:45 UTC
Last updated: 09/19/2026, 04:02:08 UTC
Views: 9
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