CVE-2026-28914

Gatekeeper bypass via crafted ZIP file handling

Published May 11, 2026 · Updated May 11, 2026

Security-control bypass in affected Apple macOS releases allows attackers to evade Gatekeeper through a maliciously crafted ZIP archive. The zip component mishandles archive files because of an undisclosed logic error; affected releases are Sonoma before 14.8.8, Sequoia before 15.7.8, and Tahoe before 26.5. Exploitation requires user interaction with the archive and lets its contents evade Gatekeeper checks, with no reported direct data-access or service-interruption impact.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Security-control bypass in affected Apple macOS releases allows attackers to evade Gatekeeper through a maliciously crafted ZIP archive. The zip component mishandles archive files because of an undisclosed logic error; affected releases are Sonoma before 14.8.8, Sequoia before 15.7.8, and Tahoe before 26.5. Exploitation requires user interaction with the archive and lets its contents evade Gatekeeper checks, with no reported direct data-access or service-interruption impact.

The record

CVE
CVE-2026-28914
Published
May 11, 2026
Updated
May 11, 2026
Vendor
Apple
Product
macOS
Classifications
CWE-693, CWE-358, T1553.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 11, 2026CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <26.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=0 <26.5

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
CWE-358Improperly Implemented Security Check for Standard
T1553.001Subvert Trust Controls: Gatekeeper Bypass

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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