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CRITICAL CISA KEV

CVE-2024-42009

CVSS v3

9.3

CRITICAL

EPSS Score

91.2 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

SSVC status

Description

A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.

CISA Known Exploited Vulnerability

Date Added
2025-06-09
Patch Due Date
2025-06-30
Ransomware Use
Unknown

Technical details

Published
2024-08-05
CERT-FR Advisory
CERTFR-2024-ALE-010

Frequently asked questions

What is CVE-2024-42009?

A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.

Is CVE-2024-42009 actively exploited?

Yes. CVE-2024-42009 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 6/30/2025.

What is the CVSS score for CVE-2024-42009?

CVE-2024-42009 has a CVSS v3 base score of 9.3 (CRITICAL severity).

Is CVE-2024-42009 affecting your environment?

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