Unauthenticated code execution via crafted request overflow
Published Apr 18, 2025 · Updated Feb 26, 2026
Stack-based buffer overflow in QUALITIA Active! mail 6 6.60.05008561 and earlier allows remote attackers to execute code or crash the service. QUALITIA states that a specially crafted request reaches a stack buffer, but has not identified the request handler or the unchecked copy that overwrites it. No authentication or user interaction is required, and successful exploitation grants code execution in the server process or interrupts webmail availability.
Summary
What happened
Stack-based buffer overflow in QUALITIA Active! mail 6 6.60.05008561 and earlier allows remote attackers to execute code or crash the service. QUALITIA states that a specially crafted request reaches a stack buffer, but has not identified the request handler or the unchecked copy that overwrites it. No authentication or user interaction is required, and successful exploitation grants code execution in the server process or interrupts webmail availability.
The record
- CVE
- CVE-2025-42599
- Published
- Apr 18, 2025
- Updated
- Feb 26, 2026
- Vendor
- QUALITIA CO., LTD.
- Product
- Active! mail
- Classifications
- CWE-121, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 18, 2025CVE publishedPublication date reported by the CVE source.
- Apr 28, 2025Exploitation reportedCISA Known Exploited Vulnerabilities entry
- Feb 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=BuildInfo: 6.60.05008561 and earlier
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Reported exploitation
- Developer-observed exploitationreported exploitation
- CISA Known Exploited Vulnerabilities entryknown exploited catalog
Technologies
Your stack
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Your stack
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