CVE-2019-16928

9.8 criticalKEVEPSS 42%

Critical (9.8) in Exim Exim Internet Mailer. In CISA KEV since 2022-03-03. EPSS 42% chance of exploitation in the next 30 days.

Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 42% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CISA KEV: listed 2022-03-03, due 2022-03-17
CWE: CWE-787
Published: 2019-09-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

canonical:ubuntu_linux
debian:debian_linux
exim:exim
fedoraproject:fedora

References

http://www.openwall.com/lists/oss-security/2019/09/28/1
http://www.openwall.com/lists/oss-security/2019/09/28/2
http://www.openwall.com/lists/oss-security/2019/09/28/3
http://www.openwall.com/lists/oss-security/2019/09/28/4
https://bugs.exim.org/show_bug.cgi?id=2449

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