IBM MQ queue manager is vulnerable to remote code execution

published 2026-09-18 51 d ago modified 2026-09-23 46 d ago also EUVD-2026-83036

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a stack buffer overflow when processing XA transaction identifiers.

Patch / fix

links 1

ibm.com/support/pages/node/7284948 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 51 d ago (2026-09-19)

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

IBM MQ

Classification

Weakness

CWE-122 Heap-based Buffer Overflow

References

ibm.com /support/pages/node/7284948
vendor-advisory, patch

Sources

CVE List CVE-2026-11375
NVD CVE-2026-11375

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary