CVE-2021-21978: vmware view_planner Improper Input Validation
Vulnerability summary
CVE-2021-21978 is a critical (CVSS 9.8) Improper Input Validation vulnerability in vmware view_planner. EPSS estimates a 99.00% chance of exploitation in the next 30 days, higher than 99.9% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 03-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
99.00%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 99.00% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (packetstormsecurity.com)
Maturity: unknown
VMware View Planner Unauthenticated Log File Upload RCE
exploit/linux/http/vmware_view_planner_4_6_uploadlog_rce
Maturity: weaponized
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-862Missing AuthorizationThe product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Affected systems
Vmware1 product
- view_planner≥ 4.0, < 4.6 | 4.6
1 vendor · 1 product
References
2 links- packetstormsecurity.com/files/161879/VMware-View-Planner-4.6-Remote-Code-Execution.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry