How severe is CVE-2017-4991?

CVE-2017-4991 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-4991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-4991?

CVE-2017-4991 primarily affects Cloudfoundry Cf-release. In total, 66 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-4991?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-4991 published?

CVE-2017-4991 was published on 2017-06-13 and last updated on 2026-06-17.

CVE-2017-4991

CVE-2017-4991 is a high-severity vulnerability in Cloudfoundry Cf-release with a CVSS 3.x base score of 7.2. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Cloudfoundry Cf-release
Published: 2017-06-13
Last modified: 2026-06-17

Description

An issue was discovered in Cloud Foundry Foundation cf-release versions prior to v260; UAA release 2.x versions prior to v2.7.4.16, 3.6.x versions prior to v3.6.10, 3.9.x versions prior to v3.9.12, and other versions prior to v3.17.0; and UAA bosh release (uaa-release) 13.x versions prior to v13.14, 24.x versions prior to v24.9, 30.x versions prior to 30.2, and other versions prior to v36. Privileged users in one zone are allowed to perform a password reset for users in a different zone.

Frequently asked questions

What is CVE-2017-4991?: An issue was discovered in Cloud Foundry Foundation cf-release versions prior to v260; UAA release 2.x versions prior to v2.7.4.16, 3.6.x versions prior to v3.6.10, 3.9.x versions prior to v3.9.12, and other versions prior to v3.17.0; and UAA bosh release (uaa-release) 13.x versions prior to v13.14, 24.x versions prior to v24.9, 30.x versions prior to 30.2, and other versions prior to v36. Privileged users in one zone are allowed to perform a password reset for users in a different zone.
How severe is CVE-2017-4991?: CVE-2017-4991 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-4991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-4991?: CVE-2017-4991 primarily affects Cloudfoundry Cf-release. In total, 66 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-4991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-4991 published?: CVE-2017-4991 was published on 2017-06-13 and last updated on 2026-06-17.

References

https://www.cloudfoundry.org/cve-2017-4991/

Affected products (66)

cpe:2.3:a:cloudfoundry:cf-release:*:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:*:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.1:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.2:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.3:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.4:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.5:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.6:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.7:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.8:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.9:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.10:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.11:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.12:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:13.13:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.1:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.2:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.3:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.4:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.5:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.6:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.7:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.8:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.9:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:24.10:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:30:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:30.1:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:*:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.2.5.4:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.2:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.3:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.4:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.4.1:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.4.2:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.4.3:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.4.4:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.4.5:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:2.7.4.6:*:*:*:*:*:*:*

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