CVE-2026-12665
Status: Awaiting AnalysisHigh (8.1)—
Severity8.1High · CVSS 3.1
Exploitation probability0.25 %higher than 15% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found
IBM MQ could allow a remote attacker to execute arbitrary code due to a stack buffer overflow when processing TLS certificates with malformed distinguished names during channel connection establishment.
CVSS
- Base score
- 8.1
- Version
- 3.1
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days
- 0.25 %
- Percentile among all scored CVEs
- 15
- 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
T1190Exploit Public-Facing Applicationinitial access90 % - Primary impact
T1059Command and Scripting Interpreterexecution85 %
Vector AV:N/PR:N/UI:N y desbordamiento de búfer en pila al procesar certificados TLS malformados permiten ejecución arbitraria de código remota.
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-121
References
Show 1 references
Raw JSON (NVD)
Show
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"published": "2026-10-19T17:17:18.773",
"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-121"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "IBM MQ could allow a remote attacker to execute arbitrary code due to a stack buffer overflow when processing TLS certificates with malformed distinguished names during channel connection establishment."
}
],
"lastModified": "2026-10-20T13:16:43.213",
"sourceIdentifier": "psirt@us.ibm.com"
}