CVE-2025-42599
Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 19 May 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.19% probability · 87th percentile
- CISA KEV
- Listed 28 April 2025 · due 19 May 2025
- Weakness
- CWE-121
- Affected
- qualitia/active\! mail
- Source
- vultures@jpcert.or.jp
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.qualitia.com/jp/news/2025/04/18_1030.html ; https://nvd.nist.gov/vuln/detail/CVE-2025-42599
References
- https://jvn.jp/en/jp/JVN22348866/Third Party Advisory
- https://www.qualitia.com/jp/news/2025/04/18_1030.htmlVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42599US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.