EUVD-2026-80229
GHSA-pvrf-wj35-pxjx
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated network-reachable auth bypass via _account_log yields full admin control, so PR:N/UI:N/AC:L with high C/I/A; AV:N retained since interface is network-exposed.
Primary rating from Vendor (CERTVDE).
CVSS VectorNVD
Lifecycle Timeline
3DescriptionNVD
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.
AnalysisAI
Authentication bypass in Pepperl+Fuchs ICE2/ICE3-series IO-Link masters (and OEM-equivalent Phoenix Contact IOL-MA8 modules) lets a remote unauthenticated attacker reach the _account_log function and authenticate as administrator, even on devices where accounts are correctly provisioned. The flaw grants full administrative control of the device management interface with no credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires only network reachability to the affected device's management interface (the _account_log function); per CVSS AV:N/AC:L/PR:N/UI:N there is no authentication, no user interaction, and no special configuration needed - the bypass works even when accounts are properly configured. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, 9.8) is internally consistent with the description: no authentication, no user interaction, low complexity, and full compromise of the device. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No specific fixed firmware version is present in the provided data; consult the CERT@VDE advisories (VDE-2026-014, VDE-2026-027, VDE-2026-028 at https://www.certvde.com/en/advisories/) for the vendor-released patched firmware and apply it to all affected ICE2/ICE3 and IOL-MA8 units. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: conduct a complete inventory of all Pepperl+Fuchs ICE2/ICE3 and Phoenix Contact IOL-MA8 deployments and identify which firmware versions are deployed; immediately restrict network access to these device management interfaces using firewall rules that limit connections to dedicated administrative workstations and engineering networks only. …
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External POC / Exploit Code
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