SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-21978

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

CRITICAL 9.8EPSS 99.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 99.0%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

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 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
99.00% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20, CWE-862
Affected
vmware/view planner
Source
security@vmware.com
EPSS trend
0%50%100%3 November 2026: 99.00%3 November 20263 November 2026

EPSS 99.0% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.