CVE-2019-16928
CRITICAL KEVExim 4.92-4.92.2 - Remote Code Execution via Long EHLO Command
Title source: llmExploitation Summary
CVE-2019-16928 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added March 3, 2022.
Description
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.
References (15)
Core 15
Core References
Vendor Advisory x_refsource_misc
https://lists.exim.org/lurker/message/20190927.032457.c1044d4c.en.html
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://bugs.exim.org/show_bug.cgi?id=2449
Patch x_refsource_misc
https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65f
Exploit, Mailing List, Mitigation, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/09/28/1
Exploit, Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/09/28/2
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/09/28/3
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2019/dsa-4536
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4141-1/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/09/28/4
Mailing List, Third Party Advisory mailing-list
x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Sep/60
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T3TJW4HPYH3O5HZCWGD6NSHTEBTTAPDC/
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UY6HPRW7MR3KBQ5JFHH6OXM7YCZBJCOB/
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EED7HM3MFIBAP5OIMJAFJ35JAJABTVSC/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202003-47
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16928
Scores
CVSS v3
9.8
EPSS
0.9031
EPSS Percentile
99.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
yes
Technical Impact
total
Details
CISA KEV
2022-03-03
VulnCheck KEV
2022-03-03
InTheWild.io
2020-06-03
ENISA EUVD
EUVD-2019-7422
CWE
CWE-787
Status
published
Products (6)
canonical/ubuntu_linux
19.04
debian/debian_linux
10.0
exim/exim
4.92 - 4.92.2
fedoraproject/fedora
29
fedoraproject/fedora
30
fedoraproject/fedora
31
Published
Sep 27, 2019
KEV Added
Mar 03, 2022
Tracked Since
Feb 18, 2026