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CVE-2015-7687

CRITICAL
9.8
CVSS Severity Score
EPSS Score0.1480%
EPSS Percentile32.63th
PublishedOct 16, 2017
Last ModifiedMay 13, 2026

Vulnerability Description

Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.

Affected Platforms (CPE)

📦
Openbsd

Opensmtpd

<= 5.7.1
💻
Fedoraproject

Fedora

= 22
💻
Fedoraproject

Fedora

= 23

References & Advisories

🔗 http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html
🔗 http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html
🔗 http://www.openwall.com/lists/oss-security/2015/10/03/1
🔗 http://www.securityfocus.com/bid/76975
🔗 https://bugzilla.redhat.com/show_bug.cgi?id=1268793
🔗 https://www.opensmtpd.org/announces/release-5.7.2.txt
🔗 https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt
🔗 http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html

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