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CVE-2026-65396

Status: Awaiting AnalysisMedium (5.5)—
Severity5.5Medium · CVSS 3.1
Exploitation probability0.21 %higher than 11% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

CVSS

Base score
5.5
Version
3.1
Vector
CVSS:3.1/AV:L/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
0.21 %
Percentile among all scored CVEs
11
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.

Vector AV:L con UI:N y PR:L apunta a explotación local; la descripción indica que una app puede causar la terminación inesperada del sistema, lo que encaja con DoS de endpoint.

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

Threat Intelligence ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Apple — MacosAI

CWEs

References

Show 3 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-65396",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
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              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-10-20T14:09:06.858948Z"
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          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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  "affected": [
    {
      "source": "product-security@apple.com",
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        {
          "vendor": "Apple",
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  "published": "2026-10-20T01:17:18.313",
  "references": [
    {
      "url": "https://support.apple.com/en-us/149035",
      "source": "product-security@apple.com"
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    {
      "url": "https://support.apple.com/en-us/149042",
      "source": "product-security@apple.com"
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      "url": "https://support.apple.com/en-us/149043",
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  ],
  "lastModified": "2026-10-20T15:17:30.450",
  "sourceIdentifier": "product-security@apple.com"
}