Mac OS X before 10.3 initializes the TCP timestamp with a constant number, which allows remote attackers to determine the system's uptime via the ID field in a TCP packet.
http://lists.apple.com/mhonarc/security-announce/msg00038.html
http://docs.info.apple.com/article.html?artnum=61798
Source: Mitre, NVD
Published: 2003-11-03
Updated: 2026-06-16
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
EPSS: 0.00346