Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability (CVE-2025-42599)
Severity: critical · Patch status: unknown · Since 2025-04-28 · CVE-2025-42599
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. CISA added CVE-2025-42599 to its Known Exploited Vulnerabilities catalog on Apr 28, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by May 19, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
