CVE-2021-21978

highpriority · act · 84OT risk · criticalEPSS 0.990 · 100 %ileexploit · weaponizedEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · weaponized

Likely / severe?

99.0% (100th) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-25

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

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-862USprimaryCWE-434US

exploits (4)

Public proof-of-concept and weaponised exploit code.

exploit/linux/http/vmware_view_planner_4_6_uploadlog_rceVMware View Planner Unauthenticated Log File Upload RCEweaponized · metasploit
GreyOrder/CVE-2021-21978CVE-2021-21978 expPoC · poc_in_github
me1ons/CVE-2021-21978CVE-2021-21978 EXPPoC · poc_in_github
skytina/CVE-2021-21978带回显版本的漏洞利用脚本PoC · poc_in_github

affected products (4)

Products and version ranges known to be affected.

n/a VMware View Planner≤ VMware View Planner 4.x prior to 4.6 Security Patch 1enisa_euvdEU
Omnissa Omnissa Horizon View Planner4.0 → 4.6 Security Patch 1fstec_bduRU
vmware view planner4.0 → 4.6nvdUScpe:2.3:a:vmware:view_planner:*:*:*:*:*:*:*:*
vmware view planner= 4.6nvdUScpe:2.3:a:vmware:view_planner:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-03-03modified 2026-06-17

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+36523 more

references (9)

External citations — patches, advisories, analysis.

scry

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