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CVE-2026-28914 is a macOS Gatekeeper bypass vulnerability in ZIP archive handling. A logic flaw in file handling allowed a maliciously crafted ZIP archive to bypass Gatekeeper checks, causing content extracted or handled from the archive to evade the expected trust and quarantine validation enforced by Gatekeeper. Apple indicates the issue was addressed through improved file handling logic. The vulnerability affects macOS and was fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.5.
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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 Gatekeeper bypass vulnerability where a maliciously crafted ZIP archive may evade checks.
An information leakage vulnerability in macOS Tahoe where visiting a maliciously crafted website may leak sensitive data.
An information leakage vulnerability in macOS Tahoe that may leak sensitive data when visiting a maliciously crafted website.
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.