Out-of-bounds read information disclosure in Apple Model I/O USD library
CVE-2026-28941 is an out-of-bounds read vulnerability affecting Apple Model I/O / USD parsing on iOS 18.7.9, iPadOS 18.7.9, macOS Sequoia 15.7.7, and macOS Tahoe 26.5. Apple states that processing a maliciously crafted file may lead to a denial-of-service or potentially disclose memory contents, and that the issue was addressed with improved checks. Supporting reporting from ZDI indicates the specific flaw exists within the USD library and is caused by insufficient validation of user-supplied data, allowing a read past the end of an allocated buffer while parsing attacker-controlled file content.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
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.
The version that knows your environment.
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.