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CVE-2026-65376 is an out-of-bounds read in the SMB component of Apple macOS. Insufficient bounds checking when processing SMB-related data can permit an application to read memory outside the intended buffer. Apple addressed the issue by improving bounds checking in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7. Successful exploitation may cause unexpected system termination.
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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.
An out-of-bounds read vulnerability in SMB.
An out-of-bounds read vulnerability in macOS that could allow an application to cause an unexpected system termination.
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.