CVE-2025-42599
Published 2025-04-18 · Updated 2026-09-24 · Source vultures@jpcert.or.jp
Summary
CVE-2025-42599 is a critical-severity (CVSS 9.8) vulnerability in Qualitia Active! Mail. CISA added it to the Known Exploited Vulnerabilities catalog on April 28, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 19, 2025. CISA does not currently list it as used in ransomware campaigns.
All 1 known-exploited Qualitia vulnerabilities →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.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Qualitia — Active! Mail
Name: Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
Date added: 2025-04-28 · Due: 2025-05-19
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.