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Operator Cookie Enables Arbitrary PHP Code Execution on Pepperl+Fuchs ICE-Series IO-Link Masters via Local File Inclusion in the IODD Parameter Save Endpoint

Last refreshed2026-09-30

Status: UPDATED  |  Advisory ID: CVE-2026-27556

Key Details

CVECVE-2026-27556
CVSS Score / Version8.8 (High) / CVSS v3.1
Updated2026-09-16
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected productssee table below
Classified asCWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion'))

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
Pepperl+FuchsICE2-8IOL-K45P-RJ45
Pepperl+FuchsICE2-8IOL1-G65L-V1D
Pepperl+FuchsICE2-8IOL-G65L-V1D
Pepperl+FuchsICE2-8IOL-K45S-RJ45
Pepperl+FuchsICE3-8IOL1-G65L-V1D
Pepperl+FuchsICE3-8IOL-G65L-V1D
Pepperl+FuchsICE3-8IOL-G65L-V1D-Y
Pepperl+FuchsICE3-8IOL-K45P-RJ45
Pepperl+FuchsICE3-8IOL-K45S-RJ45
Phoenix ContactIOL MA8 PN DI8
Phoenix ContactIOL MA8 EIP DI8
Carlo Gavazzi AutomationYL212CEI8M1IO
Carlo Gavazzi AutomationYN115CEI8RPIO
Carlo Gavazzi AutomationYL212CPN8M1IO
Carlo Gavazzi AutomationYN115CPN8RPIO
SubsystemsGeneral OT
SectorsMultiple

What to Know

A low-privileged remote attacker can exploit a local file inclusion vulnerability in the /index.php/ajax/save_iodd_parameters endpoint using a valid operator cookie allowing execution of arbitrary PHP code on the device.

What to Do

Monitor Pepperl+Fuchs, Phoenix Contact, and Carlo Gavazzi Automation's web pages for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-27556
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-27556

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