Vulnerability · CVE-1999-0590
A system does not present an appropriate legal message or warning to a user who is accessing it.
Published Jun 1, 2000 · corrected/updated Jun 16, 2026 · Apple macos · evidence confidence high
A system does not present an appropriate legal message or warning to a user who is accessing it.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-1999-0590 is a critical public vulnerability record for Apple macos. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Apple macos is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: apple/macos; linux/linux kernel (2.6.20.1); microsoft/windows 2000; microsoft/windows 95. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 10.0. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: apple. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jun 1, 2000 · Apple Security Releases
Detected
A system does not present an appropriate legal message or warning to a user who is accessing it.
Jun 16, 2026 · Apple Security Releases
Updated
A system does not present an appropriate legal message or warning to a user who is accessing it.
Affected
- cpe apple/macosversion unspecified
- cpe linux/linux kernel2.6.20.1
- cpe microsoft/windows 2000version unspecified
- cpe microsoft/windows 95version unspecified
- cpe microsoft/windows 98version unspecified
- cpe microsoft/windows nt3.5.1
- cpe microsoft/windows nt4.0
Sources
- Apple Security ReleasesVendor advisoryCVE-1999-0590
A system does not present an appropriate legal message or warning to a user who is accessing it.
nvd.nist.gov