Vulnerabilities > Stunnel > Stunnel > 5.11
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2021-02-23 | CVE-2021-20230 | Improper Certificate Validation vulnerability in Stunnel A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use both redirect and verifyChain options. | 5.0 |
| 2015-05-14 | CVE-2015-3644 | Improper Access Control vulnerability in Stunnel Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expected server after the initial connection, which allows remote attackers to bypass authentication. | 5.8 |