EUVD-2026-51043
GHSA-hj6x-rh93-r6v7
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network, unauthenticated, no UI, and full compromise justify C/I/A:H and PR:N/UI:N, but exploitation depends on catching the transient shutdown window, so AC:H rather than AC:L.
Primary rating from Vendor (cert).
CVSS VectorVendor: cert
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
Due to a flaw in the execution order of scripts during shutdown, the firewall is terminated prematurely during system shutdown. This creates a temporary window in which internal services may become externally accessible, potentially allowing an unauthenticated remote attacker to connect to these services, resulting in full system compromise.
AnalysisAI
Full system compromise of Phoenix Contact CHARX SEC EV charging controllers (SEC-3000/3050/3100/3150, versions 1.0.0 through 1.9.0) is possible because an incorrect script execution order tears down the firewall too early during system shutdown, briefly exposing internal-only services to the network. During this transient window a remote unauthenticated attacker can reach services that are normally firewalled off and gain complete control of the device. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the device to be in its shutdown (or reboot) sequence - the vulnerable window exists only while the firewall has already been torn down but internal services are still running, per the description. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H, score 9.3) rates this critical, implying trivially exploitable remote unauthenticated compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network reachability to a CHARX SEC controller waits for or induces a device shutdown or reboot (e.g., during a maintenance cycle or power event) and, during the brief firewall-down window, connects to a normally-blocked internal service and leverages it to gain full control of the controller. Because the CVSS vector indicates network attack vector with no authentication or user interaction, the connection itself requires no credentials; the main obstacle is catching the shutdown timing window. … |
| Remediation | Vendor-released patch: upgrade all affected CHARX SEC-3000/3050/3100/3150 controllers to firmware version 1.9.1 or later, which corrects the shutdown script ordering; follow the procedure in the vendor advisory at https://www.certvde.com/en/advisories/VDE-2026-008/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, perform inventory of all deployed Phoenix Contact CHARX SEC controllers (models SEC-3000/3050/3100/3150) running firmware versions 1.0.0-1.9.0 and implement network-level access controls to restrict external connectivity to affected devices; simultaneously obtain the fixed firmware from Phoenix Contact referencing vendor advisory VDE-2026-008. …
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Same weakness CWE-696 – Incorrect Behavior Order
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External POC / Exploit Code
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