CVE-2015-1637
Status: ModifiedMedium (4.3)—
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.
CVSS
- Version: 2.0
- Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
- Base score: 4.3
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 13%
- Percentile among all scored CVEs: 96
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (9)
CWEs
- CWE-310
References
- http://web.archive.org/web/20150321220028/https://freakattack.com/
- http://www.securityfocus.com/bid/72965
- http://www.securitytracker.com/id/1031833
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-031
- https://freakattack.com/
- https://technet.microsoft.com/library/security/3046015
- http://web.archive.org/web/20150321220028/https://freakattack.com/
- http://www.securityfocus.com/bid/72965
- http://www.securitytracker.com/id/1031833
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-031
- https://freakattack.com/
- https://technet.microsoft.com/library/security/3046015
Raw JSON (NVD)
Show
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