CVE-2026-83862
Status: Awaiting AnalysisCritical (9.8)—
Severity9.8Critical · CVSS 3.1
Exploitation probability0.65 %higher than 50% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found
Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over a network.
CVSS
- Base score
- 9.8
- Version
- 3.1
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days
- 0.65 %
- Percentile among all scored CVEs
- 50
- 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 access95 % - Primary impact
T1059Command and Scripting Interpreterexecution75 %
El vector AV:N/PR:N/UI:N permite explotación remota sin privilegios ni interacción; el texto indica ejecución de código por red sin intérprete concreto, por lo que se usa T1059 genérica.
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-416
References
Show 1 references
Raw JSON (NVD)
Show
{
"id": "CVE-2026-83862",
"cveTags": [],
"metrics": {
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{
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"options": [
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{
"automatable": "yes"
},
{
"technicalImpact": "total"
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],
"version": "2.0.3",
"timestamp": "2026-10-08T00:00:00+00:00"
}
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"cvssMetricV31": [
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"integrityImpact": "HIGH",
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"affected": [
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{
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],
"published": "2026-10-13T19:20:35.520",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83862",
"source": "secure@microsoft.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over a network."
}
],
"lastModified": "2026-10-14T04:18:42.487",
"sourceIdentifier": "secure@microsoft.com"
}