CVE-2019-10149
Exim Mail Transfer Agent (MTA) Improper Input Validation - [Actively Exploited]
Description
A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.
INFO
Published Date :
June 5, 2019, 2:29 p.m.
Last Modified :
Nov. 6, 2025, 2:49 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.
Apply updates per vendor instructions.
Unknown
https://nvd.nist.gov/vuln/detail/CVE-2019-10149
Affected Products
The following products are affected by CVE-2019-10149
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.0 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Upgrade to Exim 4.92 or later.
- Update the affected package.
Public PoC/Exploit Available at Github
CVE-2019-10149 has a 42 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-10149.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-10149 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-10149
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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C Python Dockerfile Shell
None
Shell
Cr. Exim 4.87 - 4.91 - Local Privilege Escalation
Shell
None
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PoC for exploitation of vulnerability CVE-2019-10149
Python
None
HTML Python Shell
Exim SMTP Vulnerabilities list
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-10149 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-10149 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Nov. 06, 2025
Action Type Old Value New Value Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-10149 Types: US Government Resource -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 22, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-10149 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Removed Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-10149 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-10149 -
Modified Analysis by [email protected]
Apr. 01, 2025
Action Type Old Value New Value -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.html Added Reference http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.html Added Reference http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.html Added Reference http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.html Added Reference http://seclists.org/fulldisclosure/2019/Jun/16 Added Reference http://www.openwall.com/lists/oss-security/2019/06/05/2 Added Reference http://www.openwall.com/lists/oss-security/2019/06/05/3 Added Reference http://www.openwall.com/lists/oss-security/2019/06/05/4 Added Reference http://www.openwall.com/lists/oss-security/2019/06/06/1 Added Reference http://www.openwall.com/lists/oss-security/2019/07/25/6 Added Reference http://www.openwall.com/lists/oss-security/2019/07/25/7 Added Reference http://www.openwall.com/lists/oss-security/2019/07/26/4 Added Reference http://www.openwall.com/lists/oss-security/2021/05/04/7 Added Reference http://www.securityfocus.com/bid/108679 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10149 Added Reference https://seclists.org/bugtraq/2019/Jun/5 Added Reference https://security.gentoo.org/glsa/201906-01 Added Reference https://usn.ubuntu.com/4010-1/ Added Reference https://www.debian.org/security/2019/dsa-4456 Added Reference https://www.exim.org/static/doc/security/CVE-2019-10149.txt -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Nov. 07, 2022
Action Type Old Value New Value Changed Reference Type http://www.openwall.com/lists/oss-security/2021/05/04/7 Mailing List http://www.openwall.com/lists/oss-security/2021/05/04/7 Mailing List, Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/108679 Broken Link http://www.securityfocus.com/bid/108679 Broken Link, Third Party Advisory, VDB Entry Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 07, 2022
Action Type Old Value New Value Removed CWE Red Hat, Inc. CWE-20 Added CWE Red Hat, Inc. CWE-78 Removed CWE Reason CWE-20 / More specific CWE option available -
Modified Analysis by [email protected]
Oct. 28, 2021
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C) Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.html Mailing List, Third Party Advisory Changed Reference Type http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.html No Types Assigned http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.html No Types Assigned http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.html No Types Assigned http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://seclists.org/fulldisclosure/2019/Jun/16 No Types Assigned http://seclists.org/fulldisclosure/2019/Jun/16 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2019/06/05/2 No Types Assigned http://www.openwall.com/lists/oss-security/2019/06/05/2 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2019/06/05/3 No Types Assigned http://www.openwall.com/lists/oss-security/2019/06/05/3 Mailing List, Patch, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2019/06/05/4 No Types Assigned http://www.openwall.com/lists/oss-security/2019/06/05/4 Exploit, Mailing List Changed Reference Type http://www.openwall.com/lists/oss-security/2019/06/06/1 No Types Assigned http://www.openwall.com/lists/oss-security/2019/06/06/1 Exploit, Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2019/07/25/6 No Types Assigned http://www.openwall.com/lists/oss-security/2019/07/25/6 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2019/07/25/7 No Types Assigned http://www.openwall.com/lists/oss-security/2019/07/25/7 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2019/07/26/4 No Types Assigned http://www.openwall.com/lists/oss-security/2019/07/26/4 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/05/04/7 No Types Assigned http://www.openwall.com/lists/oss-security/2021/05/04/7 Mailing List Changed Reference Type http://www.securityfocus.com/bid/108679 No Types Assigned http://www.securityfocus.com/bid/108679 Broken Link Changed Reference Type https://seclists.org/bugtraq/2019/Jun/5 No Types Assigned https://seclists.org/bugtraq/2019/Jun/5 Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/201906-01 No Types Assigned https://security.gentoo.org/glsa/201906-01 Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4010-1/ No Types Assigned https://usn.ubuntu.com/4010-1/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2019/dsa-4456 No Types Assigned https://www.debian.org/security/2019/dsa-4456 Third Party Advisory Removed CWE NIST CWE-20 Added CWE NIST CWE-78 -
CVE Modified by [email protected]
May. 04, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/05/04/7 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Added CWE Red Hat, Inc. CWE-20 -
CVE Modified by [email protected]
Aug. 23, 2019
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 26, 2019
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2019/07/26/4 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 26, 2019
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2019/07/25/7 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 25, 2019
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2019/07/25/6 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 17, 2019
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.html [No Types Assigned] -
CVE Modified by [email protected]
Jun. 11, 2019
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2019/Jun/16 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 07, 2019
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.html [No Types Assigned] -
CVE Modified by [email protected]
Jun. 07, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.html [No Types Assigned] -
CVE Modified by [email protected]
Jun. 07, 2019
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/108679 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 06, 2019
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2019/06/06/1 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 06, 2019
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201906-01 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 06, 2019
Action Type Old Value New Value Added Reference https://seclists.org/bugtraq/2019/Jun/5 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 05, 2019
Action Type Old Value New Value Added Reference https://www.debian.org/security/2019/dsa-4456 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 05, 2019
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2019/06/05/4 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 05, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4010-1/ [No Types Assigned] Added Reference http://www.openwall.com/lists/oss-security/2019/06/05/3 [No Types Assigned] Added Reference http://www.openwall.com/lists/oss-security/2019/06/05/2 [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 05, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10149 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10149 Issue Tracking, Third Party Advisory Changed Reference Type https://www.exim.org/static/doc/security/CVE-2019-10149.txt No Types Assigned https://www.exim.org/static/doc/security/CVE-2019-10149.txt Vendor Advisory Added CWE CWE-20 Added CPE Configuration OR *cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* versions from (including) 4.87 up to (including) 4.91