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CVE-2026-27546— Authentication Bypass in _account_log

Quick assessment

Affected
Pepperl+Fuchs ICE2-8IOL1-G65L-V1D
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

An unauthenticated remote attacker can exploit an authentication bypass in the _account_log function to log in as an admin, even when accounts are properly configured.

CVSS 9.8 · Critical
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I. Basic Information for CVE-2026-27546

Vulnerability Information

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Vulnerability Title
Authentication Bypass in _account_log
Source: CVE Program / CVE List V5
Vulnerability Description
An unauthenticated remote attacker can exploit an authentication bypass in the _account_log function to log in as an admin, even when accounts are properly configured.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Pepperl+Fuchs ICE2-8IOL1-G65L-V1D 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE2-8IOL-G65L-V1D 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE2-8IOL-K45P-RJ45 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE2-8IOL-K45S-RJ45 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE3-8IOL1-G65L-V1D 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE3-8IOL-G65L-V1D 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE3-8IOL-G65L-V1D-Y 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE3-8IOL-K45P-RJ45 1.0.0 ~ 1.7.4 -
Pepperl+Fuchs ICE3-8IOL-K45S-RJ45 1.0.0 ~ 1.7.4 -
Phoenix Contact IOL MA8 PN DI8 1.0.0 ~ 1.7.4 -
Phoenix Contact IOL MA8 EIP DI8 1.0.0 ~ 1.7.4 -
Carlo Gavazzi Automation YL212CEI8M1IO 1.0.0 ~ 1.7.4 -
Carlo Gavazzi Automation YN115CEI8RPIO 1.0.0 ~ 1.7.4 -
Carlo Gavazzi Automation YL212CPN8M1IO 1.0.0 ~ 1.7.4 -
Carlo Gavazzi Automation YN115CPN8RPIO 1.0.0 ~ 1.7.4 -

II. Public POCs for CVE-2026-27546

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III. Intelligence Information for CVE-2026-27546

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Vendor Advisories for CVE-2026-27546 (3)

Same Patch Batch · Pepperl+Fuchs · 2026-09-16 · 20 CVEs total

CVE-2026-27565 9.8 CRITICAL Remote code execution via uploading a malicious IODD file
CVE-2026-27550 8.8 HIGH Command Injection in Field_Shadow_Password Class
CVE-2026-27559 8.8 HIGH Command Injection via GET in /api/status/data
CVE-2026-27549 8.8 HIGH Command Injection in /index.php/attached_devices_tab/do_upload
CVE-2026-27555 8.8 HIGH Local File Inclusion in /index.php/ajax/get_iodd_port_info
CVE-2026-27548 8.8 HIGH Command Injection in /index.php/ajax/get_iodd_port_info
CVE-2026-27551 8.8 HIGH Command Injection in /index.php/ajax/parameterManage
CVE-2026-27556 8.8 HIGH Local File Inclusion in /index.php/ajax/save_iodd_parameters
CVE-2026-27554 8.8 HIGH Command Injection in /index.php/ajax/save_iodd_parameters
CVE-2026-27547 8.8 HIGH Command Injection in /index.php/ajax/get_iodd_menu_info
CVE-2026-27558 8.8 HIGH Command Injection in /index.php/attached_devices_tab/ajax_remove_uploaded_iodd_files
CVE-2026-27552 8.1 HIGH Unauthorized IODD File Upload due to Improper Authorization
CVE-2026-27557 7.5 HIGH Path Traversal in /index.php/view_uploaded_iodd_file
CVE-2026-27560 7.2 HIGH Command Injection via DELETE in /api/status/data
CVE-2026-27562 7.2 HIGH Command Injection via PUT in /api/iodd/config
CVE-2026-27564 7.2 HIGH Command Injection via PUT in /api/datastorage/data
CVE-2026-27563 7.2 HIGH Command Injection via GET in /api/datastorage/data
CVE-2026-27561 7.2 HIGH Command Injection via GET in /api/iodd/config
CVE-2026-27553 6.5 MEDIUM Information Disclosure via Schema Path Manipulation

IV. Related Vulnerabilities

Same product: ICE2-8IOL1-G65L-V1D
Same vendor: Pepperl+Fuchs
Same weakness: CWE-288

V. Comments for CVE-2026-27546

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