AppleCVE-2026-28900

Apple macOS: authentication bypass by spoofing

CVE-2026-28900 · Published Jul 27, 2026 · updated Aug 25, 2026

Medium5.5

Fix: upgrade to 14.8.8 or later (3 fixed versions below)

A file quarantine bypass was addressed with additional checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5. A maliciously crafted ZIP archive may bypass Gatekeeper checks.

Affected versions

Package	Affected	Fixed in
macOS Product	< 14.8.8	14.8.8
	< 15.7.8	15.7.8
	< 26.5	26.5

Details and references

CVSS 3.1: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-290, CWE-693

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