Actively exploited in the wild
Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
Qualitia - Active! Mail · Listed in the CISA KEV since 2025-04-28. This indicates confirmed attacks in production environments.
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.
CVE-2025-42599
CriticalCVSS 9.8KEVSummary
Active! mail 6 BuildInfo: 6.60.05008561 and earlier contain a stack-based buffer overflow vulnerability. Receiving a specially crafted request from a remote unauthenticated attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition.
Risk Assessment
A remote attacker can execute arbitrary code on the mail server or cause it to become unavailable, potentially disrupting organizational operations.
Recommendation
Upgrade Active! mail to a version newer than 6.60.05008561 and apply security patches from the vendor.
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Original NVD description (English source)
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.