What is CVE-2023-20892?

CVE-2023-20892 is a high-severity vulnerability in VMware Vcenter Server, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2023-06-22.

How severe is CVE-2023-20892?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in VMware Vcenter Server

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.

Vulnerability class: Buffer Overflow

Published 2023-06-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (78.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

VMware Vcenter Server — versions 7.0, 8.0
VMware Cloud Foundation (Vcenter Server) — versions 5.x, 4.x
VMware Vcenter Server (Vcenter Server) — versions 8.0, 7.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.vmware.com/security/advisories/VMSA-2023-0014.html (Patch, Vendor Advisory)
www.talosintelligence.com/vulnerability_reports/TALOS-2023-1801

Frequently asked questions

What is CVE-2023-20892?: CVE-2023-20892 is a high-severity vulnerability in VMware Vcenter Server, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2023-06-22.
How severe is CVE-2023-20892?: High severity. CVSS v3 base score is 8.1 out of 10.