September 21, 2026

CVE Watchtower

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CVE-2026-84509NVD

Vulnerability Summary

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.
Severity Level
UNKNOWN
Published Date
Sep 14, 2026
Last Modified
Sep 17, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.31%Probability
Root Weakness (CWE)
N/A

Affected & Patched Versions

Affected Versions
  • Apple macOS < 15.8
  • Apple macOS < 26.7
  • Apple macOS < 27
Patched Versions
  • Apple macOS 15.8
  • Apple macOS 26.7
  • Apple macOS 27
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📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
⚙️Custom EPSS — Filter noise, focus on risk.
💬Webhooks — Slack & Teams integration.
🚫Ad-Free — Uninterrupted experience.

External References