CVE-2025-42599
CRITICAL CISA KEVCVSS v3
9.8
CRITICAL
EPSS Score
—
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request created and sent by a remote unauthenticated attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition.
CISA Known Exploited Vulnerability
- Date Added
- 4/28/2025
- Patch Due Date
- 5/19/2025
- Required Action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 4/18/2025
- Last Modified
- 10/24/2025
Frequently Asked Questions
What is CVE-2025-42599?
Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request created and sent by a remote unauthenticated attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition.
Is CVE-2025-42599 actively exploited?
Yes. CVE-2025-42599 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 5/19/2025.
What is the CVSS score for CVE-2025-42599?
CVE-2025-42599 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
Is CVE-2025-42599 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.