CVE-2026-12155
Status: Awaiting AnalysisMedium (6.5)—
Severity6.5Medium · CVSS 3.1
Exploitation probability0.25 %higher than 16% 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 by sending specially crafted multicast status messages that trigger a NULL pointer dereference.
CVSS
- Base score
- 6.5
- Version
- 3.1
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days
- 0.25 %
- Percentile among all scored CVEs
- 16
- 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 movement90 % - Primary impact
T1499Endpoint Denial of Serviceimpact85 %
Vector AV:N con PR:L (red con privilegios) y A:H; la descripción indica DoS por desreferencia de puntero NULL, sin ejecución de comandos, por lo que no se asigna T1059.
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-502
References
Show 1 references
Raw JSON (NVD)
Show
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"published": "2026-10-19T17:17:17.447",
"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-502"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference."
}
],
"lastModified": "2026-10-19T20:55:02.217",
"sourceIdentifier": "psirt@us.ibm.com"
}