How severe is CVE-2014-5251?

CVE-2014-5251 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2014-5251 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-5251?

CVE-2014-5251 primarily affects Openstack Keystone. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-5251?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-5251 published?

CVE-2014-5251 was published on 2014-08-25 and last updated on 2026-06-17.

CVE-2014-5251

CVE-2014-5251 is a medium-severity vulnerability in Openstack Keystone with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-255.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Openstack Keystone
Published: 2014-08-25
Last modified: 2026-06-17

Description

The MySQL token driver in OpenStack Identity (Keystone) 2014.1.x before 2014.1.2.1 and Juno before Juno-3 stores timestamps with the incorrect precision, which causes the expiration comparison for tokens to fail and allows remote authenticated users to retain access via an expired token.

Frequently asked questions

What is CVE-2014-5251?: The MySQL token driver in OpenStack Identity (Keystone) 2014.1.x before 2014.1.2.1 and Juno before Juno-3 stores timestamps with the incorrect precision, which causes the expiration comparison for tokens to fail and allows remote authenticated users to retain access via an expired token.
How severe is CVE-2014-5251?: CVE-2014-5251 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2014-5251 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-5251?: CVE-2014-5251 primarily affects Openstack Keystone. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-5251?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-5251 published?: CVE-2014-5251 was published on 2014-08-25 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:openstack:keystone:2014.1:*:*:*:*:*:*:*
cpe:2.3:a:openstack:keystone:2014.1.2:*:*:*:*:*:*:*
cpe:2.3:a:openstack:keystone:juno-1:*:*:*:*:*:*:*
cpe:2.3:a:openstack:keystone:juno-2:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

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