CVE-1999-0524
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
Exploit likelihood
What each source reports
CVE List
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
- Record
CVE-1999-0524- CVSS 3.1
- 4.0 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
EUVDEUVD-1999-0522
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
- Record
EUVD-1999-0522- CVSS 3.1
- 4.0 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-5qg4-5cpf-4r9p
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
- Record
GHSA-5qg4-5cpf-4r9p- CVSS 3.1
- 4.0 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
NVD
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
- Record
CVE-1999-0524- CVSS 3.1
- 4.0 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSVAZL-6510 No score
CVE-1999-0524 affecting package kernel for versions less than 5.10.78.1-1
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
- Record
AZL-6510- Updated
- 2026-11-02
Affected products
- apple mac os x
- apple macos
- cisco ios
- hp hp-ux
- hp tru64
- ibm aix
- ibm os2
- linux kernel
- microsoft windows
- novell netware
- oracle solaris
- sco unix
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Affected packages
| Package | Affected | Fixed |
|---|---|---|
kernelAzure Linux:2 |
before 5.10.78.1-1 | 5.10.78.1-1 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Ransc0rp1on/ICMP-Timestamp-POC | 2025-05-27 |
| PoC in GitHub | biontdv/CVE-1999-0524-POC | 2026-07-14 |
| PoC in GitHub | threatlabindonesia/CVE-1999-0524-ICMP-Timestamp-and-Address-Mask-Request-Exploit | 2024-11-25 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-0524 is a low vulnerability (CVSS 2.1) in Apple Mac Os X, published August 1, 1997. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 32.2%, the 98th percentile. Fixed in kernel 5.10.78.1-1.