An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-84619)
An out-of-bounds write vulnerability in macOS was fixed by improved bounds checking. The flaw could allow an application to cause unexpected system termination or write to kernel memory. The issue is resolved in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI Analysis
Technical Summary
CVE-2026-84619 is an out-of-bounds write vulnerability in macOS that was addressed by implementing improved bounds checking. This vulnerability could allow a malicious application to cause unexpected system termination or corrupt kernel memory by writing outside intended memory bounds. The vendor fixed this issue in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Potential Impact
Exploitation of this vulnerability could result in unexpected system crashes or kernel memory corruption, potentially leading to system instability or escalation of privileges if kernel memory is manipulated. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Apply the official patches by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7, where this vulnerability has been fixed with improved bounds checking. No additional mitigation is indicated.
An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-84619)
Description
An out-of-bounds write vulnerability in macOS was fixed by improved bounds checking. The flaw could allow an application to cause unexpected system termination or write to kernel memory. The issue is resolved in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-84619 is an out-of-bounds write vulnerability in macOS that was addressed by implementing improved bounds checking. This vulnerability could allow a malicious application to cause unexpected system termination or corrupt kernel memory by writing outside intended memory bounds. The vendor fixed this issue in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Potential Impact
Exploitation of this vulnerability could result in unexpected system crashes or kernel memory corruption, potentially leading to system instability or escalation of privileges if kernel memory is manipulated. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Apply the official patches by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7, where this vulnerability has been fixed with improved bounds checking. No additional mitigation is indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-p86j-93wf-2q76
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-84619"]
- State
- PUBLISHED
Threat ID: 6aa8a18d55bf5e2cf5f3d3e5
Added to database: 09/15/2026, 01:38:21 UTC
Last enriched: 09/15/2026, 01:46:32 UTC
Last updated: 09/15/2026, 03:01:22 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.