How severe is CVE-2012-3542?

CVE-2012-3542 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-3542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-3542?

CVE-2012-3542 primarily affects Openstack Essex. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-3542?

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

When was CVE-2012-3542 published?

CVE-2012-3542 was published on 2012-09-05 and last updated on 2026-06-16.

CVE-2012-3542

CVE-2012-3542 is a medium-severity vulnerability in Openstack Essex with a CVSS 2.0 base score of 4.3. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Openstack Essex
Published: 2012-09-05
Last modified: 2026-06-16

Description

OpenStack Keystone, as used in OpenStack Folsom before folsom-rc1 and OpenStack Essex (2012.1), allows remote attackers to add an arbitrary user to an arbitrary tenant via a request to update the user's default tenant to the administrative API. NOTE: this identifier was originally incorrectly assigned to an open redirect issue, but the correct identifier for that issue is CVE-2012-3540.

Frequently asked questions

What is CVE-2012-3542?: OpenStack Keystone, as used in OpenStack Folsom before folsom-rc1 and OpenStack Essex (2012.1), allows remote attackers to add an arbitrary user to an arbitrary tenant via a request to update the user's default tenant to the administrative API. NOTE: this identifier was originally incorrectly assigned to an open redirect issue, but the correct identifier for that issue is CVE-2012-3540.
How severe is CVE-2012-3542?: CVE-2012-3542 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-3542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-3542?: CVE-2012-3542 primarily affects Openstack Essex. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-3542?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-3542 published?: CVE-2012-3542 was published on 2012-09-05 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:openstack:essex:2012.1:*:*:*:*:*:*:*
cpe:2.3:a:openstack:horizon:folsom-3:*:*:*:*:*:*:*

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