CVE-2020-12641KEV · OVERDUE

Roundcube Webmail Remote Code Execution Vulnerability

Critical · published May 4, 2020

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.7th percentile for exploit probability.

1199
days past CISA
deadline
CVSS v3.1
9.8
EPSS
84%
Percentile
99.7
In the wild
Confirmed
What it is

🔥 An attacker can slip arbitrary code into your Roundcube Webmail configuration using a cunning trick with shell metacharacters! This vulnerability is like leaving a back door open in a secure building; a clever thief can sneak in and take control of the premises without breaking a sweat. If exploited, this flaw could allow an attacker to execute any code on your server — potentially stealing sensitive data, tampering with emails, or even taking over the entire system. The implications are absolutely devastating!

Put simply

This vulnerability is like leaving a back door open in a secure building; a clever thief can sneak in and take control of the premises without breaking a sweat. The issue lies in the rcube_image.php file, where the im_convert_path or im_identify_path settings are improperly sanitized, allowing attackers to inject shell commands through these paths.

What to do

If exploited, this flaw could allow an attacker to execute any code on your server — potentially stealing sensitive data, tampering with emails, or even taking over the entire system. The implications are absolutely devastating! Immediately upgrade Roundcube Webmail to version 1.4.4 or later, where this vulnerability is patched. Additionally, review your configuration settings to ensure that no dangerous paths are being used. Monitoring for unusual activity is also advised! You've got this! With these steps, you'll be back to securing your webmail like a pro! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.84456 · 99.7th percentile
Published
2020-05-04T14:58Z
KEV added
2023-06-22 · due 2023-07-13
EPSS history
Timeline
  • 22 JUN 00:00Z
    Added to CISA KEV — remediate by Jul 13
    kev
  • 04 MAY 14:58Z
    rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters in a configuration setting for…
    cvelistv5