A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use both redir

Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expected server after the i

stunnel before 5.00, when using fork threading, does not properly update the state of the OpenSSL pseudo-random number generator (

stunnel 4.21 through 4.54, when CONNECT protocol negotiation and NTLM authentication are enabled, does not correctly perform integ

stunnel 4.40 and 4.41 might allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption)

The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote att

Unspecified vulnerability in stunnel before 4.23, when running as a service on Windows, allows local users to gain privileges via

Stunnel 4.00, and 3.24 and earlier, leaks a privileged file descriptor returned by listen(), which allows local users to hijack th

stunnel 4.0.3 and earlier allows attackers to cause a denial of service (crash) via SIGCHLD signal handler race conditions that ca

OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determ

Format string vulnerability in stunnel before 3.22 when used in client mode for (1) smtp, (2) pop, or (3) nntp allows remote malic

Format string vulnerability in stunnel 3.8 and earlier allows attackers to execute arbitrary commands via a malformed ident userna