CVE-2015-1637

Published: Mar 6, 2015Modified: May 6, 2026

4.3

Vector

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

Exploitability: 8.6 / Impact: 2.9

Source: NVD

Description

Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204 and CVE-2015-1067.

Affected (12)

Products: Microsoft: Windows 7, Windows 8, Windows 8.1, Windows Rt, Windows Rt 8.1, Windows Server 2003, Windows Server 2008, Windows Server 2012, Windows Vista

9 products

Configuration A

12 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 7	All versions
Microsoft Windows 8	All versions
Microsoft Windows 8.1	All versions
Microsoft Windows Rt	All versions
Microsoft Windows Rt 8.1	All versions
Microsoft Windows Server 2003	All versions
Microsoft Windows Server 2008	All versions
Microsoft Windows Server 2008	Version r2 sp1
Microsoft Windows Server 2008	Version r2 sp1
Microsoft Windows Server 2012	All versions
Microsoft Windows Server 2012	Version r2
Microsoft Windows Vista	All versions