CVE-2021-21978

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 99.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-03-03 · updated 2026-06-17
Weakness: CWE-20

Description

VMware View Planner 4.x prior to 4.6 Security Patch 1 contains a remote code execution vulnerability. Improper input validation and lack of authorization leading to arbitrary file upload in logupload web application. An unauthorized attacker with network access to View Planner Harness could upload and execute a specially crafted file leading to remote code execution within the logupload container.

Affected products

VMware View Planner: from 4.0 before 4.6; 4.6 — fixed in 4.6
VMware View Planner: from VMware View Planner 4.x prior through 4.6 Security Patch 1

How to fix

Upgrade to a fixed version: VMware View Planner 4.6. Check the vendor advisory for mitigations.

References

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