CVE-2025-43920
CVSS v3
8.1
HIGH
EPSS Score
1.4 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commands via shell metacharacters in an email Subject line. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.
Technical details
- Published
- 2025-04-20
Frequently asked questions
What is CVE-2025-43920?
GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commands via shell metacharacters in an email Subject line. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.
Is CVE-2025-43920 actively exploited?
Active exploitation of CVE-2025-43920 has not been confirmed. The EPSS score is 1.4%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-43920?
CVE-2025-43920 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2025-43920 affecting your environment?
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