What’s Vulnerable › Vulnerabilities

CVE-2015-3644

• Severity: medium (CVSS 5.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-05-14 · updated 2026-06-17
• Weakness: CWE-284

Description

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.

Affected products

• stunnel: 5.00, 5.01, 5.02, 5.03, 5.04, 5.05 (+8)

References

• http://www.debian.org/security/2015/dsa-3299
• http://www.securityfocus.com/bid/74659
• http://www.securitytracker.com/id/1032324
• https://www.stunnel.org/CVE-2015-3644.html
• http://www.debian.org/security/2015/dsa-3299
• http://www.securityfocus.com/bid/74659
• http://www.securitytracker.com/id/1032324
• https://www.stunnel.org/CVE-2015-3644.html

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