# CVE-2025-42599: Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability

- Exploited (CISA KEV): yes, added 2025-04-28
- Published: 2025-04-18
- CVSS: 9.8 CRITICAL (v3.0)
- EPSS: 3.4% (89th percentile)
- CWE: CWE-121

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2025-42599 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-42599