CVE-2005-1649
The IPv6 support in Windows XP SP2, 2003 Server SP1, and Longhorn, with Windows Firewall turned...
The IPv6 support in Windows XP SP2, 2003 Server SP1, and Longhorn, with Windows Firewall turned off, allows remote attackers to cause a denial of service (CPU consumption) via a TCP packet with the SYN flag set and the same destination and source address and port, a variant of CVE-2005-0688 and a reoccurrence of the "Land" vulnerability (CVE-1999-0016).
Exploit likelihood
What each source reports
NVD Score used
The IPv6 support in Windows XP SP2, 2003 Server SP1, and Longhorn, with Windows Firewall turned off, allows remote attackers to cause a denial of service (CPU consumption) via a TCP packet with the SYN flag set and the same destination and source address and port, a variant of CVE-2005-0688 and a reoccurrence of the "Land" vulnerability (CVE-1999-0016).
- Record
CVE-2005-1649- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
The IPv6 support in Windows XP SP2, 2003 Server SP1, and Longhorn, with Windows Firewall turned off, allows remote attackers to cause a denial of service (CPU consumption) via a TCP packet with the SYN flag set and the same destination and source address and port, a variant of CVE-2005-0688 and a reoccurrence of the "Land" vulnerability (CVE-1999-0016).
- Record
CVE-2005-1649- Updated
- 2026-11-02
EUVDEUVD-2005-1651 No score
The IPv6 support in Windows XP SP2, 2003 Server SP1, and Longhorn, with Windows Firewall turned off, allows remote attackers to cause a denial of service (CPU consumption) via a TCP packet with the SYN flag set and the same destination and source address and port, a variant of CVE-2005-0688 and a reoccurrence of the "Land" vulnerability (CVE-1999-0016).
- Record
EUVD-2005-1651- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5c76-645p-3q47 No score
The IPv6 support in Windows XP SP2, 2003 Server SP1, and Longhorn, with Windows Firewall turned...
The IPv6 support in Windows XP SP2, 2003 Server SP1, and Longhorn, with Windows Firewall turned off, allows remote attackers to cause a denial of service (CPU consumption) via a TCP packet with the SYN flag set and the same destination and source address and port, a variant of CVE-2005-0688 and a reoccurrence of the "Land" vulnerability (CVE-1999-0016).
- Record
GHSA-5c76-645p-3q47- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Microsoft Windows XP/2003 - Remote Denial of Service | 2005-03-07 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2005-1649 is a medium vulnerability (CVSS 5.0) in Microsoft Windows Xp, published May 18, 2005. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 21.8%, the 97th percentile. No source names a fixed version.