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  4. CVE 2026 11726 ibm mq for hpe nonstop is vulnerable to a denial
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Back to active CVEs
High · CVSS 8.1CVE-2026-11726

IBM MQ for HPE NonStop is vulnerable to a denial of service issueCVE-2026-11726

Answer in brief

CVE-2026-11726 records a High severity (CVSS 8.1) vulnerability in IBM MQ for HPE NonStop is vulnerable to a denial of service issue. The current sources do not mark it as known exploited. The current feed maps IBM/MQ for HPE NonStop (generic), IBM/MQ for HPE NonStop (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 18, 2026Updated Sep 22, 2026Source checked Nov 3, 2026First seen by HOL Sep 18, 2026Material review Sep 22, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps IBM/MQ for HPE NonStop (generic), IBM/MQ for HPE NonStop (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
IBM/MQ for HPE NonStopgeneric>=8.1.0 <=8.1.0.40Not reported
IBM/MQ for HPE NonStopgeneric8.1.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for IBM/MQ for HPE NonStop, IBM/MQ for HPE NonStop.
  2. 2Review the reported fix. Source-reported solution: IBM MQ V8.1 for HPE NonStop 8.1.0.40IT49920 Upgrade to CSU 8.1.0.41 https://www.ibm.com/support/fixcentral/swg/selectFixes IBM strongly recommends addressing this vulnerability now by installing CSU 8.1.0.41.

Evidence timeline and material changes

  1. Published upstream

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 18, 2026

Sources and claim methodology

  • Source referenceibm.com
Upstream source description

IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to improper validation of message header offset values.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Out-of-bounds read vulnerability in CoAP message parsing impacts Qt CoAPAlso CWE-125
  • Hivex: hivex: denial of service via out-of-bounds read in big-data block processingAlso CWE-125
  • Libslirp: libslirp: out-of-bounds heap read in icmp_forward_error() leading to information disclosureAlso CWE-125

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-125
Source
CVE List V5
Source checked
Nov 3, 2026
References
1 linked source
Open source record