THREATPORT/VULNERABILITY/CVE-2005-3945
HIGH SEVERITY

CVE-2005-3945

Windows 2000 vulnerability

CVSS
7.8
EPSS
12.3%
EPSS pct
96th
Exploited
No known
The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4 with Update Roll-up uses a hash of predictable data, which allows remote attackers to cause a denial of service (CPU consumption) via a flood of SYN packets that produce identical hash values, which slows down the hash table lookups.
Affected vendor
Microsoft
Affected product
Windows 2000
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Published
2005-12-01

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to availability.

Its EPSS score of 12.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2005-3945

  • Confirm whether Microsoft Windows 2000 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2005-3945.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2005-3945

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2005-3945 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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