Is CVE-2013-6391 in the CISA KEV catalog?

No. CVE-2013-6391 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-6391?

CVE-2013-6391 has a CVSS v2 base score of 5.8 (MEDIUM).

What is the EPSS score for CVE-2013-6391?

CVE-2013-6391 has an EPSS score of 2.24% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-6391?

Upgrade keystone on debian 11 to 2013.2.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2013-6391

MEDIUMEPSS 81th pctl

5.8

CVSS v2

NVD

Description

The ec2tokens API in OpenStack Identity (Keystone) before Havana 2013.2.1 and Icehouse before icehouse-2 does not return a trust-scoped token when one is received, which allows remote trust users to gain privileges by generating EC2 credentials from a trust-scoped token and using them in an ec2tokens API request.

CWE-269Improper Privilege Management

How to fix

Remediation Available

keystoneDebian

Fixed in:2013.2.1-1CVE-2013-6391

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.24%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Exploit1

bugs.launchpad.net

Third-Party Advisory7

Related Vulnerabilities

Other CWE-269 (Improper Privilege Management) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12635	Critical	9.8	100%	-	Fix
CVE-2022-24637	Critical	9.8	99%	-	Fix
CVE-2017-5689	Critical	9.8	92%	KEV	Fix
CVE-2020-3243	Critical	9.8	88%	-	-
CVE-2024-21888	High	8.8	87%	-	-
CVE-2022-0441	Critical	9.8	85%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.