THREATPORT/VULNERABILITY/CVE-2009-0085
HIGH SEVERITY

CVE-2009-0085

Windows 2000 vulnerability

CVSS
7.1
EPSS
15.2%
EPSS pct
96th
Exploited
No known
The Secure Channel (aka SChannel) authentication component in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008, when certificate authentication is used, does not properly validate the client's key exchange data in Transport Layer Security (TLS) handshake messages, which allows remote attackers to spoof authentication by crafting a TLS packet based on knowledge of the certificate but not the private key, aka "SChannel Spoofing Vulnerability."
Affected vendor
Microsoft
Affected product
Windows 2000
CVSS vector
AV:N/AC:M/Au:N/C:N/I:C/A:N
Weakness type (CWE)
  • CWE-287 — Improper Authentication
Published
2009-03-10

Risk analysis

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

Its EPSS score of 15.2% 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-2009-0085

  • Confirm whether Microsoft Windows 2000 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2009-0085.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-0085

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-0085 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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