SARA / Free Tools / KEV / CVE-2025-42599

CVE-2025-42599 on CISA KEV

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.

CISA KEV — Actively Exploited

Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability

Vendor / Product
— / Qualitia / Active! Mail
Added to KEV
2025-04-28
BOD 22-01 due
2025-05-19
Ransomware use
Unknown
CVSS / EPSS
9.8 CRITICAL · EPSS 2.76%

01What CISA says about this vulnerability

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.

02Required action — verbatim from 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.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
QUALITIA CO., LTD.Active! mail 6BuildInfo: 6.60.05008561 and earlier

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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