CVE Tools
Sign in

CVE-2020-27279

Published: Jan 6, 2021Updated: Jun 2, 2026 Sources: CVE List NVD csafCWE-476
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.7%
Top 25.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

A NULL pointer deference vulnerability has been identified in the protocol converter. An attacker could send a specially crafted packet that could reboot the device running Crimson 3.1 (Build versions prior to 3119.001).

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-476

Affected Products

crimsonredlion
Embedded
ICS / OT / IoT / plc-scada-hmi
Crimson 3.1n/a
redlioncommercialICS / OT / IoTaka crimson, n-tron 702m12-w firmware, n-tron 702-w firmware

Attack Graph

Products CVE Techniques Tactics

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

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-005-04
us-cert.cisa.gov
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-005-04.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-advisories/icsa-21-005-04
cisa.gov
and 9 more references View all →

Timeline

Published
Jan 6, 2021
Last Updated
Jun 2, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-27279 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