Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
QUALITIA CO., LTD. — Active! mail 6
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.
9.8
3.2%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- Apr 18, 2025
- Modified
- Feb 26, 2026
- Added to KEV
- Apr 28, 2025
- Federal patch due
- May 19, 2025
CISA 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.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-42599, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2025-42599 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
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.
How severe is CVE-2025-42599?
CVE-2025-42599 has a CVSS base score of 9.8 out of 10 (CVSS 3.0).
Is CVE-2025-42599 actively exploited in the wild?
Yes. CVE-2025-42599 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Apr 28, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-42599?
3.2% - meaning FIRST.org's EPSS model estimates a 3.2% probability this vulnerability will be exploited in the wild within 30 days (87% percentile among all scored CVEs).
What type of vulnerability is CVE-2025-42599?
CVE-2025-42599 is classified under CWE-121 (Stack-based buffer overflow).
Cross-checked against
Impactr finds and proves whether CVE-2025-42599 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.