How severe is CVE-2014-3517?

CVE-2014-3517 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2014-3517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3517?

CVE-2014-3517 primarily affects Openstack Nova. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3517?

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

When was CVE-2014-3517 published?

CVE-2014-3517 was published on 2014-08-07 and last updated on 2026-06-17.

CVE-2014-3517

CVE-2014-3517 is a medium-severity vulnerability in Openstack Nova 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Openstack Nova
Published: 2014-08-07
Last modified: 2026-06-17

Description

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.

Frequently asked questions

What is CVE-2014-3517?: api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.
How severe is CVE-2014-3517?: CVE-2014-3517 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2014-3517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-3517?: CVE-2014-3517 primarily affects Openstack Nova. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-3517?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-3517 published?: CVE-2014-3517 was published on 2014-08-07 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
cpe:2.3:a:openstack:nova:2014.2.0:milestone1:*:*:*:*:*:*

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