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.
Published 2015-03-06 17:59:00
Updated 2021-04-07 17:15:12
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2015-1637

Probability of exploitation activity in the next 30 days: 96.34%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 99 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2015-1637

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
4.3
MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
nvd@nist.gov

CWE ids for CVE-2015-1637

  • Assigned by: nvd@nist.gov (Primary)

References for CVE-2015-1637

Products affected by CVE-2015-1637

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