CVE-2026-11716: IBM MQ for HPE NonStop is vulnerable to a denial of service attack
Awaiting analysis
Published 18-09-2026Last modified 22-09-2026
Vulnerability summary
CVE-2026-11716 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in ibm mq_for_hpe_nonstop. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.6% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.33%
0%100%
Low · -0.12 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 18-09-2026PublishedVulnerability first disclosed.
- 22-09-2026Last modifiedVulnerability information updated.
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 during queue manager startup due to improper validation of cluster migration data.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
25%
Versus all other CVEs
30-day change
Decrease -0.12 pp
From 0.45% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ibm1 product
- mq_for_hpe_nonstop≥ 8.1.0, ≤ 8.1.0.40
1 vendor · 1 product