CVE-2016-9920

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom envelope-from addresses on the sendmail command line, which allows remote authenticated users to execute arbitrary code via a modified HTTP request that sends a crafted e-mail message.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-284

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.openwall.com/lists/oss-security/2016/12/08/10Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/94858
https://blog.ripstech.com/2016/roundcube-command-execution-via-email/Exploit, Third Party Advisory
https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-releasedRelease Notes, Vendor Advisory
https://security.gentoo.org/glsa/201612-44
http://www.openwall.com/lists/oss-security/2016/12/08/10Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/94858
https://blog.ripstech.com/2016/roundcube-command-execution-via-email/Exploit, Third Party Advisory
https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-releasedRelease Notes, Vendor Advisory
https://security.gentoo.org/glsa/201612-44

Timeline

Published: Dec 8, 2016
Last modified: Jun 17, 2026
NVD status: Modified

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