CVE-2026-12670
IBM MQ Denial of Service
IBM MQ could allow an authenticated attacker to cause a denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
IBM MQ Denial of Service
IBM MQ could allow an authenticated attacker to cause a denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.
- Record
CVE-2026-12670- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-681
- Updated
- 2026-11-02
EUVDEUVD-2026-104462
IBM MQ could allow an authenticated attacker to cause a denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.
- Record
EUVD-2026-104462- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mmjj-225r-72h6
IBM MQ could allow an authenticated attacker to cause a denial of service through a specially...
IBM MQ could allow an authenticated attacker to cause a denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.
- Record
GHSA-mmjj-225r-72h6- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-681
- Updated
- 2026-11-02
NVD
IBM MQ could allow an authenticated attacker to cause a denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.
- Record
CVE-2026-12670- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-681
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-12670 is a medium vulnerability (CVSS 5.3) in Ibm Mq Advanced Container Images, published October 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. No source names a fixed version.