VULNERABILITY INTELLIGENCE

CVE-2009-0085

CVSS score7.1 HIGH
EPSS probability15.19%
CISA KEVNot currently listed
Published2009-03-10
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:C/A:N

Description

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."

Weakness classification

  • CWE-287: Improper Authentication

Primary references