CVE-2015-7687

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.

• CWE-416

• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.htmlThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.htmlThird Party Advisory
• http://www.openwall.com/lists/oss-security/2015/10/03/1Mailing List, Third Party Advisory, VDB Entry
• http://www.securityfocus.com/bid/76975Third Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=1268793Issue Tracking, Third Party Advisory, VDB Entry
• https://www.opensmtpd.org/announces/release-5.7.2.txtRelease Notes, Vendor Advisory
• https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txtExploit, Technical Description, Third Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.htmlThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.htmlThird Party Advisory
• http://www.openwall.com/lists/oss-security/2015/10/03/1Mailing List, Third Party Advisory, VDB Entry
• http://www.securityfocus.com/bid/76975Third Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=1268793Issue Tracking, Third Party Advisory, VDB Entry
• https://www.opensmtpd.org/announces/release-5.7.2.txtRelease Notes, Vendor Advisory
• https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txtExploit, Technical Description, Third Party Advisory

Published

Oct 16, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2015-7681Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2015-7682Multiple SQL injection vulnerabilities in pie-register/pie-r…
• CVE-2015-7683Absolute path traversal vulnerability in Font.php in the Fon…
• CVE-2015-7684Unrestricted file upload in GLPI before 0.85.3 allows remote…
• CVE-2015-7685GLPI before 0.85.3 allows remote authenticated users to crea…
• CVE-2015-7686Algorithmic complexity vulnerability in Address.pm in the Em…
• CVE-2015-7691The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4…7.5
• CVE-2015-7692The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4…7.5
• CVE-2015-7695The PDO adapters in Zend Framework before 1.12.16 do not fil…
• CVE-2015-7696Info-ZIP UnZip 6.0 allows remote attackers to cause a denial…
• CVE-2015-7697Info-ZIP UnZip 6.0 allows remote attackers to cause a denial…
• CVE-2015-7698icewind1991 SMB before 1.0.3 allows remote authenticated use…