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CVE-2017-16944

7.5
HIGHCVSS v3.1 Base Score
77.91%
HIGH RiskEPSS (99th percentile)

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.

Published: 11/25/2017
Modified: 5/13/2026
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Vulnerability Summary

CVSS v3 Score

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2 Score

5

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Score (Exploitation Probability)

77.91%HIGH Exploitation Risk
99th percentile

This vulnerability has a 77.91% probability of being exploited in the next 30 days, ranking higher than 99% of all scored CVEs.

CWE Classification

Related Vulnerabilities

Same Weakness Type(CWE-835)

Similar SeverityHIGH