CVE-2026-12670
Status: Awaiting AnalysisMedium (5.3)—
Severity5.3Medium · CVSS 3.1
Exploitation probability0.20 %higher than 9% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found
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.
CVSS
- Base score
- 5.3
- Version
- 3.1
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days
- 0.20 %
- Percentile among all scored CVEs
- 9
- Score date
- 10/20/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1210Exploitation of Remote Serviceslateral movement85 % - Primary impact
T1499Endpoint Denial of Serviceimpact95 %
Vector AV:N con PR:L (red con privilegios) implica T1210; la descripción indica denegación de servicio por operaciones de memoria excesivas en la conversión de juego de caracteres.
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
ATT&CK mitigations that cover these techniques
Affected technologies (1)
⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.
CWEs
- CWE-681
References
Show 1 references
Raw JSON (NVD)
Show
{
"id": "CVE-2026-12670",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-12670",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-10-19T18:10:50.850383Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "psirt@us.ibm.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.3,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.6
}
]
},
"affected": [
{
"source": "psirt@us.ibm.com",
"affectedData": [
{
"vendor": "IBM",
"product": "MQ Operator",
"versions": [
{
"status": "affected",
"version": "3.2.0",
"versionType": "semver",
"lessThanOrEqual": "3.2.29"
},
{
"status": "affected",
"version": "3.3.0",
"lessThan": "3.4.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.4.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.5.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.5.1",
"versionType": "semver",
"lessThanOrEqual": "3.5.3"
},
{
"status": "affected",
"version": "3.6.0",
"versionType": "semver",
"lessThanOrEqual": "3.6.4"
},
{
"status": "affected",
"version": "3.7.0",
"versionType": "semver",
"lessThanOrEqual": "3.7.2"
},
{
"status": "affected",
"version": "3.8.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.8.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.9.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.9.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.9.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.0.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.0.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.0.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.0.3",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.0.4",
"versionType": "semver"
},
{
"status": "affected",
"version": "2.0.0",
"versionType": "semver",
"lessThanOrEqual": "2.0.29"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "IBM",
"product": "MQ Advanced container images",
"versions": [
{
"status": "affected",
"version": "9.4.0.6-r1",
"versionType": "semver",
"lessThanOrEqual": "r1, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3, 9.4.0.12-r1, 9.4.0.15-r1 - 9.4.0.15-r4, 9.4.0.16-r1, 9.4.0.16-r2, 9.4.0.17-r1, 9.4.0.17-r2, 9.4.0.20-r1, 9.4.0.21-r1, 9.4.0.21-r2, 9.4.0.25-r1 - 9.4.0.25-r3, 9.4.0.26-r1CD: 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1, 9.4.3.0-r2, 9.4.3.1-r1 - 9.4.3.1-r3, 9.4.4.0-r1 - 9.4.4.0-r4, 9.4.4.1-r1, 9.4.5.0-r1, 9.4.5.0-r2, 9.4.5.1-r1, 10.0.0.0-r1 - 10.0.0.0-r4, 10.0.0.5-r1LTS: 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1,9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2"
},
{
"status": "affected",
"version": "9.4.0.6-r2"
},
{
"status": "affected",
"version": "9.4.0.7-r1"
},
{
"status": "affected",
"version": "9.4.0.10-r1"
},
{
"status": "affected",
"version": "9.4.0.10-r2"
},
{
"status": "affected",
"version": "9.4.0.11-r1"
},
{
"status": "affected",
"version": "9.4.0.11-r2"
},
{
"status": "affected",
"version": "9.4.0.11-r3"
},
{
"status": "affected",
"version": "9.4.0.12-r1"
},
{
"status": "affected",
"version": "9.4.0.15-r1",
"versionType": "custom",
"lessThanOrEqual": "9.4.0.15-r4"
},
{
"status": "affected",
"version": "9.4.0.16-r1"
},
{
"status": "affected",
"version": "9.4.0.16-r2"
},
{
"status": "affected",
"version": "9.4.0.17-r1"
},
{
"status": "affected",
"version": "9.4.0.17-r2"
},
{
"status": "affected",
"version": "9.4.0.20-r1"
},
{
"status": "affected",
"version": "9.4.0.21-r1"
},
{
"status": "affected",
"version": "9.4.0.21-r2"
},
{
"status": "affected",
"version": "9.4.0.25-r1",
"versionType": "custom",
"lessThanOrEqual": "9.4.0.25-r3"
},
{
"status": "affected",
"version": "9.4.0.26-r1"
},
{
"status": "affected",
"version": "9.4.1.0-r1"
},
{
"status": "affected",
"version": "9.4.1.0-r2"
},
{
"status": "affected",
"version": "9.4.1.1-r1"
},
{
"status": "affected",
"version": "9.4.2.0-r1"
},
{
"status": "affected",
"version": "9.4.2.0-r2"
},
{
"status": "affected",
"version": "9.4.2.1-r1"
},
{
"status": "affected",
"version": "9.4.2.1-r2"
},
{
"status": "affected",
"version": "9.4.3.0-r1"
},
{
"status": "affected",
"version": "9.4.3.0-r2"
},
{
"status": "affected",
"version": "9.4.3.1-r1",
"versionType": "custom",
"lessThanOrEqual": "9.4.3.1-r3"
},
{
"status": "affected",
"version": "9.4.4.0-r1"
},
{
"status": "affected",
"version": "9.4.4.1-r1"
},
{
"status": "affected",
"version": "9.4.5.0-r1"
},
{
"status": "affected",
"version": "9.4.5.0-r2"
},
{
"status": "affected",
"version": "9.4.5.1-r1"
},
{
"status": "affected",
"version": "10.0.0.0-r1",
"versionType": "custom",
"lessThanOrEqual": "10.0.0.0-r4"
},
{
"status": "affected",
"version": "10.0.0.5-r1"
},
{
"status": "affected",
"version": "9.3.0.0-r1"
},
{
"status": "affected",
"version": "9.3.0.0-r2"
},
{
"status": "affected",
"version": "9.3.0.0-r3"
},
{
"status": "affected",
"version": "9.3.0.1-r1"
},
{
"status": "affected",
"version": "9.3.0.1-r2"
},
{
"status": "affected",
"version": "9.3.0.1-r3"
},
{
"status": "affected",
"version": "9.3.0.1-r4"
},
{
"status": "affected",
"version": "9.3.0.3-r1"
},
{
"status": "affected",
"version": "9.3.0.4-r1"
},
{
"status": "affected",
"version": "9.3.0.4-r2"
},
{
"status": "affected",
"version": "9.3.0.5-r1"
},
{
"status": "affected",
"version": "9.3.0.5-r2"
},
{
"status": "affected",
"version": "9.3.0.5-r3"
},
{
"status": "affected",
"version": "9.3.0.6-r1"
},
{
"status": "affected",
"version": "9.3.0.10-r1"
},
{
"status": "affected",
"version": "9.3.0.10-r2"
},
{
"status": "affected",
"version": "9.3.0.11-r1"
},
{
"status": "affected",
"version": "9.3.0.11-r2"
},
{
"status": "affected",
"version": "9.3.0.15-r1"
},
{
"status": "affected",
"version": "9.3.0.16-r1"
},
{
"status": "affected",
"version": "9.3.0.16-r2"
},
{
"status": "affected",
"version": "9.3.0.17-r1"
},
{
"status": "affected",
"version": "9.3.0.17-r2"
},
{
"status": "affected",
"version": "9.3.0.17-r3"
},
{
"status": "affected",
"version": "9.3.0.20-r1"
},
{
"status": "affected",
"version": "9.3.0.20-r2"
},
{
"status": "affected",
"version": "9.3.0.21-r1"
},
{
"status": "affected",
"version": "9.3.0.21-r2"
},
{
"status": "affected",
"version": "9.3.0.21-r3"
},
{
"status": "affected",
"version": "9.3.0.25-r1"
},
{
"status": "affected",
"version": "9.4.0.0-r1"
},
{
"status": "affected",
"version": "9.4.0.0-r2"
},
{
"status": "affected",
"version": "9.4.0.0-r3"
},
{
"status": "affected",
"version": "9.4.0.5-r1"
},
{
"status": "affected",
"version": "9.4.0.5-r2"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-10-19T17:17:19.440",
"references": [
{
"url": "https://www.ibm.com/support/pages/node/7292667",
"source": "psirt@us.ibm.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@us.ibm.com",
"description": [
{
"lang": "en",
"value": "CWE-681"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"lastModified": "2026-10-19T20:55:02.217",
"sourceIdentifier": "psirt@us.ibm.com"
}