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CVE-2026-64790 is a path-handling validation vulnerability affecting the CUPS component in macOS. Insufficient validation of filesystem paths available to an application can permit the application to access or operate through paths outside its intended authorization boundary, resulting in elevated privileges. Apple addressed the issue through improved path validation 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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A CUPS privilege-escalation vulnerability.
A path-handling validation vulnerability in macOS that could allow a malicious application to gain elevated privileges.
macOS Tahoe path-handling privilege-escalation vulnerability.
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.