CVE-2017-16651

HIGH
7.8
CVSS Score
Published: November 9, 2017 at 02:00 PM UTC
Updated: June 17, 2026 at 01:09 AM UTC
2 products affected across 2 vendorsDebian LinuxWebmail

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Severity
HIGH7.8
Exploitation
CISA KEV
Exploit prediction
EPSS 46%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score45.7%

EPSS (Exploit Prediction Scoring System) estimates a 45.7% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Roundcube Webmail contains a file disclosure vulnerability caused by insufficient input validation in conjunction with file-based attachment plugins, which are used by default.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Nov 3, 2021
Remediation Due
May 3, 2022
1638 days overdue

Description

Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the wild in November 2017. The attacker must be able to authenticate at the target system with a valid username/password as the attack requires an active session. The issue is related to file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (10)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/101793
x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
https://github.com/roundcube/roundcubemail/issues/6026
x_refsource_CONFIRMIssue TrackingRelease NotesThird Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.1.10
x_refsource_CONFIRMIssue TrackingRelease NotesThird Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.2.7
x_refsource_CONFIRMIssue TrackingRelease NotesThird Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.3.3
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2017/11/msg00039.html

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-552

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