Servers and applications
CVE-2011-4619 The Server Gated Cryptography (SGC) implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly handle handshake restarts, which allows remote attackers to cause a denial of service (CPU consumption) via unspecified vectors.
Severity Medium 5.0
Published 6 Jan 2012
Last changed 16 Jun 2026
Added to UpHeron 21 Oct 2026 Exploit chance 18% in the next 30 daysHigher than 97% of CVEs. EPSS by FIRST , 12 Nov 2026
Attack Over the network · No login needed
Attacker can Slow it down
CVSS vector AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources NVD Affected software Software Affected versions OpenSSLServers and applications · cpe:a:openssl:openssl Version 1.0.0d Version 1.0.0c Version 1.0.0b Version 1.0.0a All 64 release lines Every version up to 0.9.8r Every version up to 1.0.0e Version 0.9.1c Version 0.9.2b Version 0.9.4 Version 0.9.5 Version 0.9.5a Version 0.9.6 Version 0.9.6a Version 0.9.6b Version 0.9.6c Version 0.9.6d Version 0.9.6e Version 0.9.6f Version 0.9.6g Version 0.9.6h Version 0.9.6h-bogus Version 0.9.6i Version 0.9.6j Version 0.9.6k Version 0.9.6l Version 0.9.6m Version 0.9.7 Version 0.9.7a Version 0.9.7b Version 0.9.7c Version 0.9.7d Version 0.9.7e Version 0.9.7f Version 0.9.7g Version 0.9.7h Version 0.9.7i Version 0.9.7j Version 0.9.7k Version 0.9.7l Version 0.9.7m Version 0.9.8 Version 0.9.8a Version 0.9.8b Version 0.9.8c Version 0.9.8d Version 0.9.8e Version 0.9.8f Version 0.9.8g Version 0.9.8h Version 0.9.8i Version 0.9.8j Version 0.9.8k Version 0.9.8l Version 0.9.8m Version 0.9.8n Version 0.9.8o Version 0.9.8p Version 0.9.8q Version 1.0.0-beta1 Version 1.0.0-beta2 Version 1.0.0-beta3 Version 1.0.0-beta4 Version 1.0.0-beta5 Version 1.0.0 Version 1.0.0a Version 1.0.0b Version 1.0.0c Version 1.0.0d
References NVD https://nvd.nist.gov/vuln/detail/CVE-2011-4619 CVE.org https://www.cve.org/CVERecord?id=CVE-2011-4619