How severe is CVE-2017-4921?

CVE-2017-4921 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-4921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-4921?

CVE-2017-4921 affects Vmware Vcenter Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-4921?

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-2017-4921 published?

CVE-2017-4921 was published on 2017-08-01 and last updated on 2026-06-17.

CVE-2017-4921

CVE-2017-4921 is a high-severity vulnerability in Vmware Vcenter Server with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Vmware Vcenter Server
Published: 2017-08-01
Last modified: 2026-06-17

Description

VMware vCenter Server (6.5 prior to 6.5 U1) contains an insecure library loading issue that occurs due to the use of LD_LIBRARY_PATH variable in an unsafe manner. Successful exploitation of this issue may allow unprivileged host users to load a shared library that may lead to privilege escalation.

Frequently asked questions

What is CVE-2017-4921?: VMware vCenter Server (6.5 prior to 6.5 U1) contains an insecure library loading issue that occurs due to the use of LD_LIBRARY_PATH variable in an unsafe manner. Successful exploitation of this issue may allow unprivileged host users to load a shared library that may lead to privilege escalation.
How severe is CVE-2017-4921?: CVE-2017-4921 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-4921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-4921?: CVE-2017-4921 affects Vmware Vcenter Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-4921?: 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-2017-4921 published?: CVE-2017-4921 was published on 2017-08-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vmware:vcenter_server:6.5:*:*:*:*:*:*:*

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