Remote denial of service via inadequate bounds checks
Published Sep 26, 2023 · Updated Nov 4, 2025
Denial of service in CUPS in Apple macOS before 14 allows remote attackers to interrupt the CUPS service via unspecified network input. CUPS applies inadequate bounds checks when processing attacker-controlled input; Apple has not disclosed the affected routine, field, or exact failure mode. No authentication or user interaction is required, and the documented consequence is limited to service interruption rather than data access or code execution.
Summary
What happened
Denial of service in CUPS in Apple macOS before 14 allows remote attackers to interrupt the CUPS service via unspecified network input. CUPS applies inadequate bounds checks when processing attacker-controlled input; Apple has not disclosed the affected routine, field, or exact failure mode. No authentication or user interaction is required, and the documented consequence is limited to service interruption rather than data access or code execution.
The record
- CVE
- CVE-2023-40407
- Published
- Sep 26, 2023
- Updated
- Nov 4, 2025
- Vendor
- Apple
- Product
- macOS
- Classifications
- T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 26, 2023CVE publishedPublication date reported by the CVE source.
- Nov 4, 2025Record 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.
- Affected versionversion=unspecified <14
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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