What is CVE-2023-20877?

CVE-2023-20877 is a high-severity vulnerability in VMware Cloud Foundation, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2023-05-12.

How severe is CVE-2023-20877?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in VMware Cloud Foundation

CVE-2023-20877

VMware Aria Operations contains a privilege escalation vulnerability. An authenticated malicious user with ReadOnly privileges can perform code execution leading to privilege escalation.

Vulnerability class: Broken Access Control

Published 2023-05-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

VMware Cloud Foundation
VMware Vrealize Operations — versions 8.6.0, 8.10.0
VMware Aria Operations (Formerly Vrealize Operations) — versions VMware Aria Operations prior to 8.12

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

www.vmware.com/security/advisories/VMSA-2023-0009.html (Vendor Advisory)

Frequently asked questions

What is CVE-2023-20877?: CVE-2023-20877 is a high-severity vulnerability in VMware Cloud Foundation, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2023-05-12.
How severe is CVE-2023-20877?: High severity. CVSS v3 base score is 8.8 out of 10.