CVE-2025-42599

Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability

n/a

CVSS

3.2%

EPSS (exploit prob.)

86.9%

EPSS percentile

Yes

Actively exploited

Ransomware use

2025-04-28

Added

MITRE ATT&CK techniques

How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.

Technique	Name	Relationship
T1190	Exploit Public-Facing Application	exploitation technique
T1588.006	Vulnerabilities	exploitation technique
T1059	Command and Scripting Interpreter	primary impact
T1499	Endpoint Denial of Service	primary impact

Summary

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.

Affected software

Vendor: Qualitia · Product: Active! Mail

Weakness types (CWE):

What to do

This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.

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All information is aggregated from public sources for awareness only and does not constitute an accusation or a security assessment. No personal data or credentials are published.