Code-signing bypass via incomplete signature validation
Published Nov 1, 2022 · Updated Apr 22, 2025
Code-signature verification in Apple macOS before 11.7, 12.6, or 13 allows local users to bypass signing checks via a crafted app. Apple identifies the Security component and inadequate code-signature validation checks but has not published the specific validation locus or malformed input accepted. Exploitation requires a local app and user interaction; successful use makes untrusted code pass a signing decision, with no reported data disclosure or service interruption.
Summary
What happened
Code-signature verification in Apple macOS before 11.7, 12.6, or 13 allows local users to bypass signing checks via a crafted app. Apple identifies the Security component and inadequate code-signature validation checks but has not published the specific validation locus or malformed input accepted. Exploitation requires a local app and user interaction; successful use makes untrusted code pass a signing decision, with no reported data disclosure or service interruption.
The record
- CVE
- CVE-2022-42793
- Published
- Nov 1, 2022
- Updated
- Apr 22, 2025
- Vendor
- Apple
- Product
- macOS
- Classifications
- CWE-347, T1553
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 1, 2022CVE publishedPublication date reported by the CVE source.
- Apr 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <11.7
- Affected versionversion=unspecified <12.6
- Affected versionversion=unspecified <13
- Affected versionversion=unspecified <15.7
- Affected versionversion=unspecified <16
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
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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