CVE-2025-42599
critical CISA KEVQualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
Vendor / product: Qualitia — Active! Mail
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
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2025-04-18 04:15
Modified: 2026-09-24 13:10
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2025-04-28 · due 2025-05-19
Known ransomware use: Unknown
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
qualitia / active\!_mail <6.60.05008562
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.qualitia.com/jp/news/2025/04/18_1030.html
References
- https://jvn.jp/en/jp/JVN22348866/ vultures@jpcert.or.jp
- https://www.qualitia.com/jp/news/2025/04/18_1030.html vultures@jpcert.or.jp
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42599 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗