CVE-2022-37452: Debian Linux

Critical severity, CVSS 9.8. EPSS: 3.8% chance of exploitation in the next 30 days.

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.

Affected products

• Debian Debian Linux: version 10.0 only
• Exim Exim: before 4.95 (fixed in 4.95)

Published 2022-08-07. Last modified 2026-06-17.