CVE Tools
Sign in

CVE-2021-20659

Published: Feb 24, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-434
NVD MITRE
8.8CVSSHIGH
EPSS Score
2.1%
Top 21.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

SolarView Compact SV-CPT-MC310 prior to Ver.6.5 allows an authenticated attacker to upload arbitrary files via unspecified vectors. If the file is PHP script, an attacker may execute arbitrary code.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-434

Affected Products

sv-cpt-mc310 firmwarecontec
EmbeddedFirmware
ICS / OT / IoT / industrial-network
SolarView CompactContec Co., Ltd.
On-prem
ICS / OT / IoT / plc-scada-hmi
conteccommercialICS / OT / IoTaka contec hmi system, solarview compact firmware
contec co., ltd.commercialICS / OT / IoTaka solarview compact, conprosys hmi system (chs)

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Command and Control
Initial Access
Persistence
View detailed technique mapping

References

https://jvn.jp/en/jp/JVN37417423/index.html
jvn.jp
https://www.contec.com/jp/api/downloadlogger?download=https://www.contec.com/jp/-/media/contec/jp/support/security-info/contec_security_solarview_210216.pdf
contec.com
https://www.contec.com/jp/download/contract/contract2/?itemid=b28c8b7c-9f40-40b2-843c-b5b04c035b0e&downloaditemid=fa248fba-8901-4d9e-8212-b139f2defbdf
contec.com

Timeline

Published
Feb 24, 2021
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-20659 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows