CVEs / CVE-2025-42599
CVE-2025-42599: Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
- Known exploited in the CISA KEV catalog since 28 Apr 2025
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 3.35% chance of exploitation in the next 30 days, higher than 88% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| QUALITIA CO., LTD. Active! mail 6 | BuildInfo: 6.60.05008561 and earlier | — |
Exploitation
| In CISA KEV since | 28 Apr 2025 |
|---|---|
| Due date for US federal agencies | 19 May 2025 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-121 |
References
- CVE-2025-42599 on NVD
- CVE-2025-42599 in the CISA KEV catalog
- https://www.qualitia.com/jp/news/2025/04/18_1030.html (cited by CISA)
- https://jvn.jp/en/jp/JVN22348866/ Third Party Advisory
- https://www.qualitia.com/jp/news/2025/04/18_1030.html Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42599 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.