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CVE-2026-28941 is an out-of-bounds read vulnerability in Apple’s Model I/O component, specifically within the USD library used when processing crafted files. The flaw is caused by insufficient validation of user-supplied data, allowing the parser to read past the end of an allocated buffer. On affected Apple platforms, including macOS and mobile operating systems prior to the listed fixes, processing a maliciously crafted file can trigger the condition. Apple addressed the issue with improved checks.
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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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Model I/O where a maliciously crafted file may cause denial-of-service or disclose memory contents.
A macOS Tahoe vulnerability where processing a maliciously crafted file may lead to denial-of-service or memory disclosure.
A macOS Sequoia vulnerability where a maliciously crafted file may cause denial of service or disclose memory contents.
A macOS Tahoe file-processing vulnerability that may cause denial-of-service or disclose memory contents.
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.