Vulnerability · Published Sep 18, 2026 · Assigned by ibm
CVE-2026-11727IBM MQ for HPE NonStop is vulnerable to a denial of service issue
High 8.1
In plain English
A high-severity heap buffer overflow in MQ for HPE NonStop from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 50.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 IBM MQ C client could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of queue manager responses when requesting AMS policy data.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | MQ for HPE NonStop | 8.1.0 – through 8.1.0.40 |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.ibm.com/support/pages/node/7287708 vendor-advisory, patch