CVE-2023-20894

Vcenter Server vulnerability

CVSS

8.1

EPSS

33.9%

EPSS pct

98th

Exploited

No known

The VMware vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bound write by sending a specially crafted packet leading to memory corruption.

Affected vendor

Vmware

Affected product

Vcenter Server

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-787 — Out-of-bounds Write

Published

2023-06-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 33.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2023-20894

Confirm whether Vmware Vcenter Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2023-20894.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-20894

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