A use-after-free issue was addressed with improved memory management. (CVE-2026-43719)
A use-after-free vulnerability in macOS was addressed by improving memory management. The flaw could be triggered by mounting a maliciously crafted SMB network share, potentially causing system termination. The issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI Analysis
Technical Summary
CVE-2026-43719 is a use-after-free vulnerability in macOS that could be exploited by mounting a specially crafted SMB network share. This vulnerability leads to improper memory handling, resulting in potential system termination. Apple has fixed this issue by improving memory management in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Potential Impact
Successful exploitation of this vulnerability may cause the affected system to terminate unexpectedly, impacting system availability. There is no indication of code execution or data compromise from the provided information.
Mitigation Recommendations
Apply the official fixes by updating to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7. These versions include improved memory management that addresses the use-after-free vulnerability.
A use-after-free issue was addressed with improved memory management. (CVE-2026-43719)
Description
A use-after-free vulnerability in macOS was addressed by improving memory management. The flaw could be triggered by mounting a maliciously crafted SMB network share, potentially causing system termination. The issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43719 is a use-after-free vulnerability in macOS that could be exploited by mounting a specially crafted SMB network share. This vulnerability leads to improper memory handling, resulting in potential system termination. Apple has fixed this issue by improving memory management in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Potential Impact
Successful exploitation of this vulnerability may cause the affected system to terminate unexpectedly, impacting system availability. There is no indication of code execution or data compromise from the provided information.
Mitigation Recommendations
Apply the official fixes by updating to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7. These versions include improved memory management that addresses the use-after-free vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7c3r-2ff2-pqq2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43719"]
- State
- PUBLISHED
Threat ID: 6aa8a1bd55bf5e2cf5f3e00b
Added to database: 09/15/2026, 01:39:09 UTC
Last enriched: 09/15/2026, 01:56:09 UTC
Last updated: 09/15/2026, 03:01:22 UTC
Views: 2
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.