TI-2020-16603 Aliases CVE-2020-27279 GHSA-9v5g-g6rw-x6vc

NULL pointer dereference in Crimson 3.1

MEDIUM 42CWE-476Published 2021-01-06 · Updated 2026-06-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-476.

Summary

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01785 78th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Crimson 3.1	Build versions prior to 3119.001	—	No fix listed	CNA

Crimson 3.1 Vendor— Affected Build versions prior to 3119.001 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:redlion:crimson:3.1:::::::*	3.1	Vulnerable	Red Lion

cpe:2.3:a:redlion:crimson:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Red Lion

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-27279
2026-10-03 Alias added: GHSA-9v5g-g6rw-x6vc

References

Advisory 1

https://us-cert.cisa.gov/ics/advisories/icsa-21-005-04

TI-2020-16609 Missing authentication in Crimson 3.1 CVSS 3.1CRITICAL 9.1
TI-2023-05262 Red Lion Crimson Improper Neutralization of Null Byte or NUL Character CVSS 3.1CRITICAL 9.8
TI-2022-02851 Path traversal in Red Lion Controls Crimson 3.0 CVSS 3.1HIGH 7.5
TI-2019-08214 Use after free in Red Lion Controls Crimson CVSS 3.1HIGH 7.8
TI-2019-08203 Red Lion Controls Crimson, version 3.0 and prior and version 3.1 prior to release… CVSS 3.1HIGH 7.8
TI-2019-08197 Memory corruption in Red Lion Controls Crimson CVSS 3.1HIGH 7.8

See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences