CVE-2025-42599 (GCVE-0-2025-42599)

Vulnerability from cvelistv5 – Published: 2025-04-18 03:52 – Updated: 2026-02-26 18:28
VLAI CISA Previdian
Summary
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.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-30 03:56 UTC
CWE
  • CWE-121 - Stack-based buffer overflow
Assigner
References
Impacted products
Vendor Product Version
QUALITIA CO., LTD. Active! mail 6 Affected: BuildInfo: 6.60.05008561 and earlier
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 585f9c21-bb72-4c29-a103-97936e955873

Vulnerability ID: CVE-2025-42599

Status: Confirmed

Status Updated: 2025-04-28 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2025-04-28
Asserted: 2025-04-28
Scope
Notes: Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability | Affected: Qualitia / Active! Mail | Description: Qualitia Active! Mail contains a stack-based buffer overflow vulnerability that allows a remote, unauthenticated attacker to execute arbitrary or trigger a denial-of-service via a specially crafted request. | 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. | Due date: 2025-05-19 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.qualitia.com/jp/news/2025/04/18_1030.html ; https://nvd.nist.gov/vuln/detail/CVE-2025-42599
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-121
Feed CISA Known Exploited Vulnerabilities Catalog
Product Active! Mail
Due Date 2025-05-19
Date Added 2025-04-28
Vendorproject Qualitia
Vulnerabilityname Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ed9c36bb-1ce1-48b1-9a31-bdb69c615aec

Vulnerability ID: CVE-2025-42599

Status: Confirmed

Status Updated: 2025-04-28 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2025-04-28
Asserted: 2025-04-28
Scope
Notes: Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request... | Affected: QUALITIA / Active! mail 6 | CVSS: 9.8 (CRITICAL) | EPSS: 0.03298 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request...
Cve Id CVE-2025-42599
Vendor QUALITIA
Ghsa Id None
Product Active! mail 6
Added Date 2025-04-28T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.03298
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.88106
Used In Malware unknown
Vulnerability Id CVE-2025-42599
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

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