CVE-2025-42599: Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
Qualitia Active! Mail contains a stack-based buffer overflow vulnerability that allows a remote, unauthenticated attacker to execute arbitrary or trigger a denial-of-service via a specially crafted request.
| Vendor | Qualitia |
|---|---|
| Product | Active! Mail |
| Date added to KEV | 2025-04-28 |
| Due date (BOD 22-01) | 2025-05-19 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-121 |
| 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. |
What to do
- Identify every instance of Qualitia Active! Mail in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's 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.
- Federal civilian agencies must act by 2025-05-19 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2025-42599 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://www.qualitia.com/jp/news/2025/04/18_1030.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-42599