---
title: "CVE-2021-21983: VMware vRealize Operations vulnerability | CubePath"
description: "Arbitrary file write vulnerability in vRealize Operations Manager API (CVE-2021-21983) prior to 8.4 may allow an authenticated malicious actor…"
language: en
source: https://cubepath.com/security/cve/CVE-2021-21983
---

# CVE-2021-21983: VMware vRealize Operations vulnerability | CubePath

## Description

Arbitrary file write vulnerability in vRealize Operations Manager API (CVE-2021-21983) prior to 8.4 may allow an authenticated malicious actor with network access to the vRealize Operations Manager API can write files to arbitrary locations on the underlying photon operating system.

Official description from the CVE record, published by vmware. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-21983)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.68775 (68.8% probability)

Percentile

99.4%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Mar 31, 2021

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

yes

Technical impact

total

## Affected products

Products listed in the CVE record, as the CNA published them.

- VMware vRealize Operations

  - affected: VMware vRealize Operations prior to 8.4

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [vmware.com/security/advisories/VMSA-2021-0004.html](https://www.vmware.com/security/advisories/VMSA-2021-0004.html)
- [packetstormsecurity.com/files/162349/VMware-vRealize-Operat…](http://packetstormsecurity.com/files/162349/VMware-vRealize-Operations-Manager-Server-Side-Request-Forgery-Code-Execution.html)

## Timeline

1. ID reserved Jan 4, 2021
2. Record published Mar 31, 2021
3. Record last updated Aug 12, 2026

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)