What is CVE-2017-2621?

CVE-2017-2621 is a medium-severity vulnerability in OpenStack Heat, classified under Files or Directories Accessible to External Parties. CVSS score: 5.5/10. Published 2018-07-27.

How severe is CVE-2017-2621?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in OpenStack Heat

CVE-2017-2621

An access-control flaw was found in the OpenStack Orchestration (heat) service before 8.0.0, 6.1.0 and 7.0.2 where a service log directory was improperly made world readable. A malicious system user could exploit this flaw to access sensitive information.

Published 2018-07-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (33.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

OpenStack Heat
Red Hat Openstack-Heat — versions openstack-heat-7.0.2, openstack-heat-6.1.0, openstack-heat-8.0.0
Red Hat OpenStack — versions 9, 10

Weakness classification (CWE)

References

bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
access.redhat.com/errata/RHSA-2017:1243 (vendor-advisory, Vendor Advisory)
access.redhat.com/errata/RHSA-2017:1464 (vendor-advisory, Vendor Advisory)
www.securityfocus.com/bid/96280 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)

Frequently asked questions

What is CVE-2017-2621?: CVE-2017-2621 is a medium-severity vulnerability in OpenStack Heat, classified under Files or Directories Accessible to External Parties. CVSS score: 5.5/10. Published 2018-07-27.
How severe is CVE-2017-2621?: Medium severity. CVSS v3 base score is 5.5 out of 10.