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Findings

Vulnerability · CVE-1999-0524

ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.

Published Aug 1, 1997 · corrected/updated Jun 16, 2026 · Apple mac os x · evidence confidence high

ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.

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-1999-0524 is a medium public vulnerability record for Apple mac os x. 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 mac os x is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: apple/mac os x; apple/macos; cisco/ios; hp/hp-ux. 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 4.0. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-200. 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.

  1. Aug 1, 1997 · Apple Security Releases

    Detected

    ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.

  2. Jun 16, 2026 · Apple Security Releases

    Updated

    ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.

Affected

  • cpe apple/mac os xversion unspecified
  • cpe apple/macosversion unspecified
  • cpe cisco/iosversion unspecified
  • cpe hp/hp-uxversion unspecified
  • cpe hp/tru64version unspecified
  • cpe ibm/aixversion unspecified
  • cpe ibm/os2version unspecified
  • cpe linux/linux kernelversion unspecified
  • cpe microsoft/windowsversion unspecified
  • cpe novell/netwareversion unspecified
  • cpe oracle/solarisversion unspecified
  • cpe sco/sco unixversion unspecified

Sources

References