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CVE-2026-28840 is a local privilege escalation vulnerability in Apple PackageKit affecting macOS. Apple describes the issue as a permissions flaw that was addressed with additional restrictions. Successful exploitation could allow a locally running application to gain root privileges, indicating improper enforcement of privilege boundaries within PackageKit. The vulnerability was fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, and macOS Tahoe 26.4.
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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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A privilege escalation vulnerability in PackageKit that may allow an app to gain root privileges.
A privilege escalation vulnerability in macOS Sonoma that may allow an app to gain root privileges due to a permissions issue.
A privilege escalation vulnerability in macOS Sequoia caused by a permissions issue that may allow an app to gain root privileges.
A privilege escalation vulnerability in macOS Sequoia caused by a permissions issue that may allow an app to gain root privileges.
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.