Servers and applications
CVE-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 system with a valid username/password as the attack requires an active session. The issue is related to file-based…
Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021.
- Severity
- High 7.8
- Published
- 9 Nov 2017
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 46% in the next 30 daysHigher than 98% of CVEs. EPSS by FIRST, 11 Nov 2026
- Attack
- Needs local access · Needs a user account · No user action needed
- Attacker can
- Read data · Change data · Take it down
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Sources
- NVD
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 software
| Software | Affected versions |
|---|---|
RoundcubeServers and applications · cpe:a:roundcube:webmail |
All 11 release lines
|
Known exploited
- CISA name
- Roundcube Webmail File Disclosure Vulnerability
- Required action
- Apply updates per vendor instructions.
- Due for US agencies
- 3 May 2022
- Used in ransomware
- Not known