How severe is CVE-2023-20892?

CVE-2023-20892 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-20892 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20892?

CVE-2023-20892 primarily affects Vmware Vcenter Server. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20892?

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-2023-20892 published?

CVE-2023-20892 was published on 2023-06-22 and last updated on 2026-06-17.

CVE-2023-20892

CVE-2023-20892 is a high-severity vulnerability in Vmware Vcenter Server with a CVSS 3.x base score of 8.1. 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Vmware Vcenter Server
Published: 2023-06-22
Last modified: 2026-06-17

Description

The vCenter Server contains a heap overflow vulnerability due to the usage of uninitialized memory in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may exploit heap-overflow vulnerability to execute arbitrary code on the underlying operating system that hosts vCenter Server.

Frequently asked questions

What is CVE-2023-20892?: The vCenter Server contains a heap overflow vulnerability due to the usage of uninitialized memory in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may exploit heap-overflow vulnerability to execute arbitrary code on the underlying operating system that hosts vCenter Server.
How severe is CVE-2023-20892?: CVE-2023-20892 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-20892 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20892?: CVE-2023-20892 primarily affects Vmware Vcenter Server. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20892?: 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-2023-20892 published?: CVE-2023-20892 was published on 2023-06-22 and last updated on 2026-06-17.

References

Affected products (33)

cpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2b:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3e:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3f:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3g:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3h:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3i:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3j:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3k:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3l:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:-:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:b:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:update1:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:update1a:*:*:*:*:*:*

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