What is CVE-2017-1000369?

CVE-2017-1000369 is a medium-severity vulnerability in Exim, classified under Improper Resource Shutdown or Release. CVSS score: 4.0/10. Published 2017-06-19.

How severe is CVE-2017-1000369?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Is CVE-2017-1000369 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Exim

CVE-2017-1000369

Exim supports the use of multiple "-p" command line arguments which are malloc()'ed and never free()'ed, used in conjunction with other issues allows attackers to cause arbitrary code execution. This affects exim version 4.89 and earlier. Please note that at this time upstream has released a patch (commit 65e061b76867a9ea7aeeb535341b790b90ae6c21), but it is not known if a new point release is available that addresses this issue at this time.

Published 2017-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (42.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Exim — versions 4.88, 4.89
Debian Linux — versions 8.0, 9.0

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release

Public proof-of-concept exploits

References

github.com/Exim/exim/commit/65e061b76867a9ea7aeeb535341b790b90ae6c21 (Third Party Advisory, Mitigation)
www.securitytracker.com/id/1038779 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/99252 (VDB Entry, Third Party Advisory, vdb-entry)
access.redhat.com/security/cve/CVE-2017-1000369 (Vendor Advisory)
security.gentoo.org/glsa/201709-19 (vendor-advisory, Third Party Advisory)
www.qualys.com/2017/06/19/stack-clash/stack-clash.txt (Third Party Advisory)
www.debian.org/security/2017/dsa-3888 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2017-1000369?: CVE-2017-1000369 is a medium-severity vulnerability in Exim, classified under Improper Resource Shutdown or Release. CVSS score: 4.0/10. Published 2017-06-19.
How severe is CVE-2017-1000369?: Medium severity. CVSS v3 base score is 4.0 out of 10.
Is CVE-2017-1000369 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.