CVE-2026-28900 — MEDIUM (5.5)

Q: What is CVE-2026-28900?

CVE-2026-28900 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A file quarantine bypass was addressed with additional checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A maliciously crafted ZIP archive may bypass Gatekeeper checks.

Q: How severe is CVE-2026-28900?

CVE-2026-28900 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-28900?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Macos.

Vulnerability Description

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

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Apple	Macos	>= 14.0, < 14.8.8

Related Weaknesses (CWE)

CWE-290 CWE-693

References

https://support.apple.com/en-us/128071Release NotesVendor Advisory
https://support.apple.com/en-us/128072Release NotesVendor Advisory

FAQ

What is CVE-2026-28900?

CVE-2026-28900 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A file quarantine bypass was addressed with additional checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A maliciously crafted ZIP archive may bypass Gatekeeper checks.

How severe is CVE-2026-28900?

CVE-2026-28900 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-28900?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Macos.