CVE-2016-9920

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Summary

CVECVE-2016-9920
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-12-08 18:59:00 UTC
Updated2026-05-06 22:30:45 UTC
Descriptionsteps/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.

Risk And Classification

Primary CVSS: v3.0 7.5 HIGH from [email protected]

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

EPSS: 0.383040000 probability, percentile 0.972630000 (date 2026-05-10)

Problem Types: CWE-284 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.5HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary6AV:N/AC:M/Au:S/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/Au:S/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Roundcube Webmail 1.2.0 All All All
Application Roundcube Webmail 1.2.1 All All All
Application Roundcube Webmail 1.2.2 All All All
Application Roundcube Webmail All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Updates 1.2.3 and 1.1.7 released af854a3a-2127-422b-91ae-364da2661108 roundcube.net Release Notes, Vendor Advisory
Roundcube CVE-2016-9920 Remote Code Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Roundcube: Arbitrary code execution (GLSA 201612-44) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
oss-security - roundcube code execution via mail() af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
RIPS - Roundcube 1.2.2: Command Execution via Email af854a3a-2127-422b-91ae-364da2661108 blog.ripstech.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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