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CVE record · CVE-2025-42599

Stack-based buffer overflow in QUALITIA CO., LTD. Active! mail 6

CVSS 9.8 CriticalCriticalIn CISA KEVEPSS 0.034 · 88th percentile

Critical, because:

  • In CISA’s KEV catalogue since 28 Apr 2025: it is known to be exploited.
  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: jpcert) at 18 Apr 2025, 03:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
QUALITIA CO., LTD. Active! mail 6
  • affected BuildInfo: 6.60.05008561 and earlier
Identifiers
CVE-2025-42599
CNA
jpcert
Weakness (CWE)
CWE-121
Tags
Published
18 Apr 2025
Updated
26 Feb 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (jpcert)
  • CISA KEV Listed since 28 Apr 2025: known to be exploited.
  • EPSS 0.034, the 88th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 18 Apr 2025. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.