CVE-2019-10149

Name: CVE-2019-10149
Creator: NVD / NIST
Published: 2019-06-05T14:29:11.293+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 99.96%

Last modified Jun 17, 2026

CVE-2019-10149 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.96% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

99.96%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jul 10, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Exim	Exim	>= 4.87, <= 4.91
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Debian	Debian Linux	9.0

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/Jun/16Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/05/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/05/3Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/05/4Exploit, Mailing List
http://www.openwall.com/lists/oss-security/2019/06/06/1Exploit, Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/07/25/6Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/07/25/7Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/07/26/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/04/7Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/108679Broken Link, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10149Issue Tracking, Third Party Advisory
https://seclists.org/bugtraq/2019/Jun/5Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/201906-01Third Party Advisory
https://usn.ubuntu.com/4010-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4456Third Party Advisory
https://www.exim.org/static/doc/security/CVE-2019-10149.txtVendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/Jun/16Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/05/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/05/3Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/05/4Exploit, Mailing List
http://www.openwall.com/lists/oss-security/2019/06/06/1Exploit, Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/07/25/6Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/07/25/7Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/07/26/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/04/7Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/108679Broken Link, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10149Issue Tracking, Third Party Advisory
https://seclists.org/bugtraq/2019/Jun/5Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/201906-01Third Party Advisory
https://usn.ubuntu.com/4010-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4456Third Party Advisory
https://www.exim.org/static/doc/security/CVE-2019-10149.txtVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-10149US Government Resource

Timeline

Published: Jun 5, 2019
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2019-10149?

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.

How severe is CVE-2019-10149?

CVE-2019-10149 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 99.96% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2019-10149?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-10149?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST