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Fencer Intel
critical 9.8

CVE-2021-21978 in the critical feed json

VMware View Planner 4.x prior to 4.6 Security Patch 1 contains a remote code execution vulnerability.

published 5y ago modified 4mo ago also EUVD-2021-9149

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
99.0%
EPSS 99.0% chance of exploitation in 30 days, percentile 99.9%
public exploits
1
Metasploit, plus a Nuclei check

Summary

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.

Patch / fix

  • vmware view_planner 4.6

Is CVE-2021-21978 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. First public exploit (Metasploit exploit/linux/http/vmware_view_planner_4_6_uploadlog_rce)
  2. Published

Exploit prediction

99.01% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a VMware View Planner

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.