CVE-2026-15203Network attack vector

Unauthenticated code execution via exposed debug interfaces

Published Aug 26, 2026 · Updated Aug 26, 2026

Improper access control in Danfoss iC7-Automation SP, iC7-Marine, and iC7-Hybrid allows remote attackers to execute unsigned code. Default-enabled debug and engineering interfaces expose internal-value read/write operations and accept unsigned applications, EEPROM data, and firmware without authorization. Unauthenticated network reachability is sufficient on iC7-Automation SP 2025.3.3 and earlier, iC7-Marine 2025.8.19 and earlier, and iC7-Hybrid 2025.10.300845 and earlier, enabling device-software and internal-state modification.

CVSS severity9.3
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Improper access control in Danfoss iC7-Automation SP, iC7-Marine, and iC7-Hybrid allows remote attackers to execute unsigned code. Default-enabled debug and engineering interfaces expose internal-value read/write operations and accept unsigned applications, EEPROM data, and firmware without authorization. Unauthenticated network reachability is sufficient on iC7-Automation SP 2025.3.3 and earlier, iC7-Marine 2025.8.19 and earlier, and iC7-Hybrid 2025.10.300845 and earlier, enabling device-software and internal-state modification.

The record

CVE
CVE-2026-15203
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Danfoss
Product
iC7-Hybrid
Classifications
CWE-1191, CAPEC-1, CAPEC-180, T0866
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <=2025.10.300845

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Danfoss · iC7-Hybridversion=0 <=2025.10.300845
Danfoss · iC7-Marineversion=0 <=2025.8.19
Danfoss · iC7-Automation SPversion=0 <=2025.3.3

Published CVSS scores

9.3DanfossCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

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-1191On-Chip Debug and Test Interface With Improper Access Control
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T0866Exploitation of Remote Services

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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