CVE-1999-0240

High CVSS 7.5

Published 1999-01-01 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-0240, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

Some filters or firewalls allow fragmented SYN packets with IP reserved bits in violation of their implemented policy.

Sources

NVD record for CVE-1999-0240

CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P