What is CVE-2020-12641?

CVE-2020-12641 is a critical-severity vulnerability in Roundcube Webmail, classified under OS Command Injection. CVSS score: 9.8/10. Published 2020-05-04.

How severe is CVE-2020-12641?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-12641 known to be exploited?

Yes. CVE-2020-12641 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-22), indicating it is being actively exploited. 8 public proof-of-concept repositories are indexed.

RCE in Roundcube Webmail

CVE-2020-12641

rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters in a configuration setting for im_convert_path or im_identify_path.

Vulnerability class: Command Injection (OS Command Injection)

Published 2020-05-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.845 (99.7th percentile), scored 2026-10-15.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.843 · newest: 0.845 · change: +0.001

Affected products

Roundcube Webmail
openSUSE Backports Sle — versions 15.0
openSUSE Leap — versions 15.1, 15.2

Weakness classification (CWE)

CWE-78 — OS Command Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-06-22. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-07-13.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

github.com/roundcube/roundcubemail/releases/tag/1.4.4 (Release Notes)
github.com/roundcube/roundcubemail/compare/1.4.3...1.4.4 (Release Notes)
roundcube.net/news/2020/04/29/security-updates-1.4.4-1.3.11-and-1.2.10 (Release Notes, Vendor Advisory)
github.com/roundcube/roundcubemail/commit/fcfb099477f353373c34c8a65c9035b06b364… (Patch)
github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-12641-Command Injecti… (Exploit, Third Party Advisory)
security.gentoo.org/glsa/202007-41 (vendor-advisory, Third Party Advisory)
lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.html (vendor-advisory, Mailing List, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2020-12641?: CVE-2020-12641 is a critical-severity vulnerability in Roundcube Webmail, classified under OS Command Injection. CVSS score: 9.8/10. Published 2020-05-04.
How severe is CVE-2020-12641?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-12641 known to be exploited?: Yes. CVE-2020-12641 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-22), indicating it is being actively exploited. 8 public proof-of-concept repositories are indexed.