CVE-2026-27565Network attack vector

Unauthenticated root code execution via malicious IODD upload

Published Sep 16, 2026 · Updated Sep 16, 2026

Command injection in affected IO-Link masters before 1.7.4 allows remote attackers to execute uploaded shell scripts with root privileges. The IODD upload path accepts a crafted device-description file and places its embedded shell script where the firmware executes it as root. No authentication or user interaction is required, and the installed script remains active after the device reboots.

CVSS severityUnavailable
Unscored
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in affected IO-Link masters before 1.7.4 allows remote attackers to execute uploaded shell scripts with root privileges. The IODD upload path accepts a crafted device-description file and places its embedded shell script where the firmware executes it as root. No authentication or user interaction is required, and the installed script remains active after the device reboots.

The record

CVE
CVE-2026-27565
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Carlo Gavazzi Automation
Product
YN115CEI8RPIO
Classifications
T0853, T0819
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=1.0.0 <1.7.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Carlo Gavazzi Automation · YN115CEI8RPIOversion=1.0.0 <1.7.4
Carlo Gavazzi Automation · YL212CEI8M1IOversion=1.0.0 <1.7.4
Phoenix Contact · IOL MA8 EIP DI8version=1.0.0 <1.7.4
Pepperl+Fuchs · ICE2-8IOL1-G65L-V1Dversion=1.0.0 <1.7.4
Phoenix Contact · IOL MA8 PN DI8version=1.0.0 <1.7.4
Pepperl+Fuchs · ICE3-8IOL-K45P-RJ45version=1.0.0 <1.7.4
Pepperl+Fuchs · ICE2-8IOL-G65L-V1Dversion=1.0.0 <1.7.4
Pepperl+Fuchs · ICE3-8IOL-K45S-RJ45version=1.0.0 <1.7.4
Pepperl+Fuchs · ICE3-8IOL1-G65L-V1Dversion=1.0.0 <1.7.4
Carlo Gavazzi Automation · YN115CPN8RPIOversion=1.0.0 <1.7.4
Pepperl+Fuchs · ICE3-8IOL-G65L-V1D-Yversion=1.0.0 <1.7.4
Carlo Gavazzi Automation · YL212CPN8M1IOversion=1.0.0 <1.7.4
Pepperl+Fuchs · ICE2-8IOL-K45P-RJ45version=1.0.0 <1.7.4
Pepperl+Fuchs · ICE3-8IOL-G65L-V1Dversion=1.0.0 <1.7.4
Pepperl+Fuchs · ICE2-8IOL-K45S-RJ45version=1.0.0 <1.7.4

Published CVSS scores

No CVSS assessment is available in this record.

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

T0853Scripting
T0819Exploit Public-Facing Application

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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