01 Record
CVE-2026-11728
IBM MQ .NET client is vulnerable to remote code execution
HighPUBLISHEDCNA: ibm
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
02 Description
IBM MQ .NET client is vulnerable to remote code execution
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.35% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 28.8% of scored records. A rank, not a probability.
- NVD base score
- 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-09-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-09-15 17:42Z1 MO AGO
- Last updated
- 2026-09-16 03:56Z1 MO AGO
- Reserved
- 2026-06-09
- Assigning CNA
- ibm
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.2
- Document digest
- 686222fe1434bb9463bdbf1047ba793af50ac2f4b8cfe1064cb354ee22af87c2
05 Affected products
VendorProductVersionsPlatforms
IBMMQ9.1.0.0 to 9.1.0.37 LTS, 9.2.0.0 to 9.2.0.43 LTS, 9.3.0.0 to 9.3.0.41 LTS, 9.3.0.0 to 9.3.5.1 CD, 9.4.0.0 to 9.4.0.25 LTS, 9.4.0.0 to 9.4.5.1 CD, 10.0.0.0—
06 References
07 Remediation
This issue was addressed under Known Issue DT473417 IBM MQ version 9.1 LTS Apply cumulative security update 9.1.0.38 IBM MQ version 9.2 LTS Apply cumulative security update 9.2.0.44 IBM MQ version 9.3 LTS Apply cumulative security update 9.3.0.42 IBM MQ version 9.4 LTS Apply cumulative security update 9.4.0.26 IBM MQ version 9.3 CD, 9.4 CD and 10.0.0.0 Upgrade to IBM MQ version 10.0.0.5