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Vulnerabilities

Vulnerability · CVE-2017-16651

Roundcube Webmail File Disclosure Vulnerability

Published Nov 8, 2017 · catalog updated Jun 16, 2026 · Roundcube Roundcube Webmail

Patch now

CVE-2017-16651 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Roundcube Roundcube Webmail against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
45.74%
Remediation
Remediation guidance
Affected products
cpe debian/debian linux · cpe roundcube/webmail · vendor Roundcube Roundcube Webmail

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe debian/debian linux7.0
  • cpe roundcube/webmail1.2.0
  • cpe roundcube/webmail1.2.1
  • cpe roundcube/webmail1.2.2
  • cpe roundcube/webmail1.2.3
  • cpe roundcube/webmail1.2.4
  • cpe roundcube/webmail1.2.5
  • cpe roundcube/webmail1.2.6
  • vendor Roundcube Roundcube Webmailversion unspecified

How to fix CVE-2017-16651

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2017-16651 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Roundcube Roundcube Webmail against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with debian/debian linux 7.0. Apply updates per vendor instructions.

What should an analyst verify?

CWE-552: Files or Directories Accessible to External Parties. EPSS 45.74%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 9, 2017 · Catalog

    Detected

    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 attachm

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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 attachm

Sources

  • CISA KEVConfirmed exploitationCVE-2017-16651

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2017-16651

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2017-16651

    30-day exploitation probability 45.7%

    first.org
  • Metasploit ModulesPublic exploit moduleauxiliary_gather/roundcube_auth_file_read

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2017-16651

    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 sy

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/161226/Roundcube-Webmail-1.2-File-Disclosure.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2017-16651

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.