CVE-2023-1966Network attack vector

Unauthenticated code execution via overprivileged copy service

Published Apr 28, 2023 · Updated Jan 16, 2025

Execution with unnecessary privileges in Illumina Universal Copy Service v1.x and v2.x allows remote attackers to execute OS-level code. The service accepts unauthenticated file uploads and executes uploaded code with excessive operating-system privileges. Network access to the service is sufficient to alter instrument settings, configurations, or software and to access sensitive data.

CVSS severity7.4
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Execution with unnecessary privileges in Illumina Universal Copy Service v1.x and v2.x allows remote attackers to execute OS-level code. The service accepts unauthenticated file uploads and executes uploaded code with excessive operating-system privileges. Network access to the service is sufficient to alter instrument settings, configurations, or software and to access sensitive data.

The record

CVE
CVE-2023-1966
Published
Apr 28, 2023
Updated
Jan 16, 2025
Vendor
Illumina
Product
iScan Control Software
Classifications
CWE-269, CWE-250, T1105
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 2025Record 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=4.0.0
  2. Affected versionversion=4.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Illumina · iScan Control Softwareversion=4.0.0; version=4.0.5
Illumina · NextSeq 550Dx Control Softwareversion=4.0 (RUO Mode)
Illumina · NextSeq 1000/2000 Control Softwareversion=0 <=1.4.1
Illumina · NextSeq 550Dx Operating Softwareversion=1.0.0 <=1.3.1; version=1.3.3
Illumina · iSeq 100version=All versions
Illumina · MiniSeq Control Softwareversion=2.0
Illumina · MiSeqDx Operating Softwareversion=4.0.1
Illumina · MiSeq Control Softwareversion=4.0 (RUO Mode)
Illumina · NovaSeq 6000 Control Softwareversion=0 <=1.7
Illumina · NovaSeq Control Softwareversion=1.8
Illumina · NextSeq 500/550 Control Softwareversion=4.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.4CISA ICS-CERTCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-250Execution with Unnecessary Privileges
T1105Ingress Tool Transfer

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

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Your stack

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