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CVE-2026-12556 affects HP Easy Start for macOS versions earlier than 2.16.7.260722. The application globally enabled the macOS App Transport Security NSAllowsArbitraryLoads setting, permitting insecure HTTP connections that would normally be restricted, and retained cleartext FTP as a fallback mechanism for software-component acquisition. This weakens transport protections and can expose component downloads to network interference when fallback conditions are met. The issue is classified as CWE-319 and is rated CVSS v4.0 7.7 (High).
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A high-severity cleartext-transmission vulnerability in HP Easy Start for macOS caused by globally relaxed App Transport Security settings. In conjunction with FTP fallback and weak or incorrectly enforced integrity checks, it could permit a network-positioned attacker to manipulate downloaded software components.
A high-severity cleartext-transmission weakness in HP Easy Start for macOS due to globally relaxed App Transport Security settings. It permits insecure HTTP connections and, combined with FTP fallback, raises the risk of network manipulation of downloaded installation components when integrity controls are weak or misconfigured.
A high-severity privilege-escalation vulnerability in HP Easy Start for macOS involving trust boundaries around privileged components.
A privilege-escalation vulnerability or set of vulnerabilities affecting HP Easy Start for macOS versions earlier than 2.16.7.260722.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.