CVE-2017-16844: Procmail

Critical severity, CVSS 9.8. EPSS: 12.5% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.

Affected products

• Procmail Procmail: version 3.22 only

Published 2017-11-16. Last modified 2026-06-17.