CVE-2021-21978

Name: CVE-2021-21978
Creator: NVD / NIST
Published: 2021-03-03T18:15:14.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 98.95%

Last modified Jun 17, 2026

CVE-2021-21978 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 98.95% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

98.95%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vmware	View Planner	>= 4.0, < 4.6
Vmware	View Planner	4.6

References

http://packetstormsecurity.com/files/161879/VMware-View-Planner-4.6-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2021-0003.htmlVendor Advisory
http://packetstormsecurity.com/files/161879/VMware-View-Planner-4.6-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2021-0003.htmlVendor Advisory

Timeline

Published: Mar 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21978?

How severe is CVE-2021-21978?

CVE-2021-21978 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 98.95% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21978?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21978?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST