Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-42599

CVE-2025-42599CRITICAL

Qualitia Active! Mail

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0330   88.1   YES

AFFECTED
  Product         Versions                                Fixed
  Active! mail 6  BuildInfo: 6.60.05008561 and earlier –  —

TIMELINE
  Apr 16  Reserved by jpcert
  Apr 18  Published (CNA: jpcert)
  Apr 28  Added to CISA KEV, remediation due 2025-05-19

CWE-121 · CNA: jpcert · CVSS v3.1 · 3 references · NVD status: Analyzed · KEV due May 19, 2025

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 16, 2025	Reserved	Reserved by jpcert
April 18, 2025	Published	Published (CNA: jpcert)
April 28, 2025	KEV ADDED	Added to CISA KEV, remediation due 2025-05-19

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
QUALITIA CO., LTD.	Active! mail 6	—	BuildInfo: 6.60.05008561 and earlier	—

Weaknesses

CWE-121

References (3)

https://jvn.jp/en/jp/JVN22348866/ [Third Party Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42599 [US Government Resource]
https://www.qualitia.com/jp/news/2025/04/18_1030.html [Vendor Advisory]

Authoritative record: CVE-2025-42599 at cve.org

Vendors: qualitia co

Weaknesses: CWE-121

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-42599 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.