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CVE-2026-43690 is a race condition in the Server Message Block (SMB) implementation in macOS. Insufficient synchronization can permit a local user to read kernel memory. Apple addressed the flaw by improving locking in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local race-condition vulnerability in SMB that can expose kernel memory.
A race-condition vulnerability in macOS that could allow a local user to read kernel memory; it was addressed through improved locking.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.