CVE-2020-12641 — Roundcube Webmail

What is 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.

The record classifies CVE-2020-12641 under weakness class CWE-78. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 5 affected-product entries are recorded, across 2 vendors, listed below. The identifier was first published 2356 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 9.8 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (FIRST): 84.3% probability of exploitation in the next 30 days, higher than 99.6% of all scored CVEs
CISA KEV: Listed since 2023-06-22, federal remediation deadline 2023-07-13
Threadlinqs priority: 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
Published: 2020-05-04, last modified 2025-10-21

Is CVE-2020-12641 being exploited?

CISA added CVE-2020-12641 to the Known Exploited Vulnerabilities catalog on 2023-06-22, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2023-07-13 under BOD 22-01. Weaponised exploit code for CVE-2020-12641 is publicly available. 3 public proof-of-concept repositories are tracked for this identifier. A ProjectDiscovery Nuclei detection template exists (http/cves/2020/CVE-2020-12641.yaml). It currently carries a trending score of 50 in the Threadlinqs vulnerability feed.

Affected products and versions

Roundcube: Webmail
Opensuse: Backports Sle 15.0, Leap 15.1, Leap 15.2

Showing 4 of 5 recorded product entries.

How to fix CVE-2020-12641

The record marks a vendor fix as available for CVE-2020-12641. Patch reference: https://github.com/roundcube/roundcubemail/commit/fcfb099477f353373c34c8a65c9035b06b364db3. Vendor advisory: https://github.com/roundcube/roundcubemail/commit/fcfb099477f353373c34c8a65c9035b06b364db3. Because CVE-2020-12641 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2023-07-13. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2020-12641

2 tracked threats in the Threadlinqs corpus reference CVE-2020-12641, either in the campaign’s CVE list or as an indicator on the campaign record.

Russia (GRU Unit 26165 / APT28) Runs Multi-Vector Surveillance, Intimidation, Sabotage and Cyber Espionage Campaign Against Europe's Ukraine Defence Supply Chain — HIGH · 2026-08-16
APT28/UAC-0001 Sustained Cyber Espionage Against Ukraine & EU (2024-2026 New TTPs) — HIGH · 2026-02-12

Sources

Enriched from CVE.org, FIRST EPSS, CISA KEV, public proof-of-concept repositories, ProjectDiscovery Nuclei. Last verified by Threadlinqs on 2026-10-10.