CVE-2010-3229
HighThe 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| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 7Microsoft | See advisory | n/a |
| Windows Server 2008Microsoft | r2 | n/a |
| Windows VistaMicrosoft | See advisory | n/a |
Timeline
Publicly disclosed
Oct 13, 2010
Last updated
Apr 28, 2026
Weakness Type
- CWE-20 Improper Input Validation
References
FAQ
Common Questions.
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 an…
Affected: Windows 7 (Microsoft); Windows Server 2008 (Microsoft) versions r2; Windows Vista (Microsoft). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
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.
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