CVE-2026-10858: CWE-122 Heap-based Buffer Overflow in IBM MQ for HPE NonStop
IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer underflow when processing multi-segment messages.
AI Analysis
Technical Summary
IBM MQ for HPE NonStop versions 8.1.0 through 8.1.0.40 contain a heap-based buffer overflow vulnerability (CWE-122) triggered during the processing of multi-segment messages. This flaw allows an authenticated attacker to cause a denial of service or potentially execute arbitrary code by exploiting a heap buffer underflow condition. The vulnerability has a CVSS 3.1 base score of 9.9, indicating critical severity with network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can result in complete compromise of the affected system, including denial of service and arbitrary code execution, impacting confidentiality, integrity, and availability of IBM MQ for HPE NonStop.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-10858: CWE-122 Heap-based Buffer Overflow in IBM MQ for HPE NonStop
Description
IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer underflow when processing multi-segment messages.
CVSS v3.1
Score 9.9critical
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 versions 8.1.0 through 8.1.0.40 contain a heap-based buffer overflow vulnerability (CWE-122) triggered during the processing of multi-segment messages. This flaw allows an authenticated attacker to cause a denial of service or potentially execute arbitrary code by exploiting a heap buffer underflow condition. The vulnerability has a CVSS 3.1 base score of 9.9, indicating critical severity with network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can result in complete compromise of the affected system, including denial of service and arbitrary code execution, impacting confidentiality, integrity, and availability of IBM MQ for HPE NonStop.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-06-04T13:16:29.221Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aad640855bf5e2cf53a6a43
Added to database: 09/18/2026, 16:17:12 UTC
Last enriched: 09/18/2026, 16:32:27 UTC
Last updated: 09/19/2026, 04:02:08 UTC
Views: 8
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