How severe is CVE-2012-5563?

CVE-2012-5563 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2012-5563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5563?

CVE-2012-5563 affects Openstack Folsom. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-5563?

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

When was CVE-2012-5563 published?

CVE-2012-5563 was published on 2012-12-18 and last updated on 2026-06-16.

CVE-2012-5563

CVE-2012-5563 is a medium-severity vulnerability in Openstack Folsom with a CVSS 2.0 base score of 4.0. 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 4.0)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Openstack Folsom
Published: 2012-12-18
Last modified: 2026-06-16

Description

OpenStack Keystone, as used in OpenStack Folsom 2012.2, does not properly implement token expiration, which allows remote authenticated users to bypass intended authorization restrictions by creating new tokens through token chaining. NOTE: this issue exists because of a CVE-2012-3426 regression.

Frequently asked questions

What is CVE-2012-5563?: OpenStack Keystone, as used in OpenStack Folsom 2012.2, does not properly implement token expiration, which allows remote authenticated users to bypass intended authorization restrictions by creating new tokens through token chaining. NOTE: this issue exists because of a CVE-2012-3426 regression.
How severe is CVE-2012-5563?: CVE-2012-5563 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2012-5563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5563?: CVE-2012-5563 affects Openstack Folsom. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-5563?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-5563 published?: CVE-2012-5563 was published on 2012-12-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:openstack:folsom:2012.2:*:*:*:*:*:*:*

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