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CVE-2013-6426

14
FAUCET Score

CVE-2013-6426 describes an improper policy enforcement vulnerability in the cloudformation-compatible API of OpenStack Orchestration API (Heat) versions before Havana 2013.2.1 and Icehouse before icehouse-2. This flaw allows authenticated local in-instance users to bypass access restrictions, enabling them to create or update stacks. With a CVSS score of 4.0 (AV:N/AC:L/Au:S/C:N/I:P/A:N), this vulnerability is rated as medium severity, indicating a network-accessible attack with low complexity that could lead to partial integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2013.2CPE matchmatch criteria
cpe:2.3:a:openstack:heat:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:L/Au:S/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 73rd percentile among its peer group of 21,954 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: OpenStack 4 for RHEL 6Fixed in: openstack-heat-0:2013.2.1-4.el6ost
View patch
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 3Fixed in: openstack-heat

Vendor Advisories (1)

redhatCVE-2013-6426Moderate

Heat: CFN policy rules not all enforced

Dec 11, 2013

References

rhn.redhat.com / errata/RHSA-2014-0090.html
bugs.launchpad.net / heat/+bug/1256049
ExploitPatch
exchange.xforce.ibmcloud.com / vulnerabilities/89658
openwall.com / lists/oss-security/2013/12/11/9
securityfocus.com / bid/64243