CVE-2026-12670: CWE-681 Incorrect Conversion between Numeric Types in IBM MQ Operator
Description
CVE-2026-12670 is a medium severity vulnerability in IBM MQ Operator where an authenticated attacker can cause a denial of service by sending a specially crafted message that triggers excessive memory operations during character set conversion. The vulnerability affects multiple specific versions of IBM MQ Operator. No known exploits are reported in the wild. The CVSS 3.1 base score is 5.3, reflecting network attack vector, high attack complexity, low privileges required, no user interaction, and impact limited to availability.
CVSS v3.1
Score 5.3medium
Affected software
IBM
MQ Operator
IBM
MQ Advanced container images
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM MQ Operator contains a CWE-681 Incorrect Conversion between Numeric Types vulnerability (CVE-2026-12670) that allows an authenticated attacker to cause a denial of service. This occurs through a specially crafted message that triggers excessive memory operations during character set conversion, leading to resource exhaustion. The vulnerability affects a broad range of IBM MQ Operator versions, including various 3.x, 4.x, 9.x, and 10.x releases as explicitly enumerated. The CVSS 3.1 vector indicates network attack vector, high attack complexity, low privileges required, no user interaction, and an impact on availability only.
Potential Impact
An authenticated attacker can cause a denial of service condition by exploiting this vulnerability, resulting in excessive memory operations during character set conversion. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
No vendor advisory or patch information is provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict authenticated access to IBM MQ Operator and monitor for unusual memory usage patterns related to character set conversions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-06-18T21:02:06.263Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad64a152cdf04f6566e6f47
Added to database: 10/19/2026, 16:49:25 UTC
Last enriched: 10/19/2026, 17:04:50 UTC
Last updated: 10/19/2026, 17:08:36 UTC
Views: 3
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