CVE-2020-27283

Memory disclosure via crafted protocol message

Published Jan 6, 2021 · Updated Jun 2, 2026

Improper resource release in Red Lion Controls Crimson 3.1 before build 3119.001 allows attackers to disclose arbitrary memory locations. The published advisory identifies the DA10D protocol converter and a crafted message, but does not disclose the parser or resource-lifecycle error involved. Access to the converter's adjacent communications path is sufficient, and the reported consequence is memory disclosure without modification or interruption.

CVSS severity4.3
Medium
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper resource release in Red Lion Controls Crimson 3.1 before build 3119.001 allows attackers to disclose arbitrary memory locations. The published advisory identifies the DA10D protocol converter and a crafted message, but does not disclose the parser or resource-lifecycle error involved. Access to the converter's adjacent communications path is sufficient, and the reported consequence is memory disclosure without modification or interruption.

The record

CVE
CVE-2020-27283
Published
Jan 6, 2021
Updated
Jun 2, 2026
Vendor
Red Lion Controls
Product
Crimson
Classifications
CWE-404
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Build versions prior to 3119.001

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Red Lion Controls · Crimsonversion=Build versions prior to 3119.001

Published CVSS scores

4.3CISA ICS-CERTCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo