CVE-2017-16944: Debian Linux
High severity, CVSS 7.5. EPSS: 63.4% chance of exploitation in the next 30 days.
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.
Affected products
Published 2017-11-25. Last modified 2026-06-17.