Is CVE-2005-1649 in the CISA KEV catalog?

No. CVE-2005-1649 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2005-1649?

CVE-2005-1649 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2005-1649?

CVE-2005-1649 has an EPSS score of 21.78% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2005-1649

MEDIUMEPSS 97th pctl

5.0

CVSS v2

NVD

Description

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).

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

21.78%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.