What’s Vulnerable › Vulnerabilities

CVE-2016-8652

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 48.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-02-17 · updated 2026-06-17
• Weakness: CWE-20

Description

The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.

Affected products

• dovecot: through 2.2.27

References

• http://dovecot.org/pipermail/dovecot-news/2016-December/000333.html
• http://www.openwall.com/lists/oss-security/2016/12/02/4
• http://www.openwall.com/lists/oss-security/2016/12/05/12
• http://www.securityfocus.com/bid/94639
• http://dovecot.org/pipermail/dovecot-news/2016-December/000333.html
• http://www.openwall.com/lists/oss-security/2016/12/02/4
• http://www.openwall.com/lists/oss-security/2016/12/05/12
• http://www.securityfocus.com/bid/94639

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