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Vulnerability Intelligence

CVE-2010-3229

High

The Secure Channel (aka SChannel) security package in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7, when IIS 7.x is used, does not properly process client certificates during SSL and TLS handshakes, which allows remote attackers to…

Published Oct 13, 2010 · Updated Apr 28, 2026

Key Facts

Patch immediately
  • CVE-2010-3229 is a high-severity vulnerability (CVSS 7.1 v2) affecting Windows 7 (Microsoft), Windows Server 2008 (Microsoft), Windows Vista (Microsoft).
  • It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
  • EPSS estimates a 50% probability of exploitation in the next 30 days.
  • No fixed version is listed yet; check the vendor advisory for mitigations.
  • Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

7.1

AV:N/AC:M/Au:N/C:N/I:N/A:C

EPSS (30-day exploit likelihood)

50%

Higher than 98.8% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

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Description

The Secure Channel (aka SChannel) security package in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7, when IIS 7.x is used, does not properly process client certificates during SSL and TLS handshakes, which allows remote attackers to cause a denial of service (LSASS outage and reboot) via a crafted packet, aka "TLSv1 Denial of Service Vulnerability."

Affected Products

12 affected entries in total
ProductAffected versionsFixed in
Windows 7MicrosoftSee advisoryn/a
Windows Server 2008Microsoftr2n/a
Windows VistaMicrosoftSee advisoryn/a

Timeline

  1. Publicly disclosed

    Oct 13, 2010

  2. Last updated

    Apr 28, 2026

Weakness Type

  • CWE-20 Improper Input Validation

References

FAQ

Common Questions.

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