CVE-2025-1058 Overview
CVE-2025-1058 is a firmware integrity vulnerability affecting Schneider Electric devices. The flaw is classified under [CWE-494: Download of Code Without Integrity Check]. The device accepts firmware images without cryptographically validating their authenticity or integrity. An authenticated attacker with network access can upload malicious firmware that renders the device inoperable.
Critical Impact
Successful exploitation allows an authenticated remote attacker to load unverified firmware, causing loss of integrity and availability on industrial control equipment.
Affected Products
- Schneider Electric device firmware (see vendor advisory SEVD-2025-042-01)
- Products identified in the Schneider Electric Security Notice
- Deployments exposing firmware update interfaces to networked users
Discovery Timeline
- 2025-02-13 - CVE-2025-1058 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-1058
Vulnerability Analysis
The vulnerability stems from missing integrity verification during firmware download and installation. The affected device does not validate a digital signature, cryptographic hash, or certificate chain on the firmware image before accepting it. An attacker who reaches the firmware update interface can push a crafted image. The device flashes the malicious payload and can become inoperable, disrupting the industrial process it controls. The weakness maps to [CWE-494], which covers the class of code-download flows that omit authenticity checks.
Root Cause
The root cause is the absence of a trust anchor and signature verification step in the firmware update workflow. The device treats any well-formed image supplied through the update channel as legitimate. There is no boot-time or install-time enforcement that rejects unsigned or tampered firmware.
Attack Vector
The attack vector is network-based and requires low privileges. An attacker with credentials that authorize firmware operations submits a modified image through the standard update mechanism. No user interaction is required. The result is corruption of firmware storage, degraded confidentiality of running code, and denial of service on the physical device. Because industrial devices are often deeply embedded in operational processes, recovery may require physical intervention or vendor-assisted reflashing.
Detection Methods for CVE-2025-1058
Indicators of Compromise
- Unexpected firmware version strings reported by device management protocols after unscheduled reboots.
- Firmware upload requests originating from unusual internal hosts or outside change-management windows.
- Devices entering fault, recovery, or bootloop states following network activity to update endpoints.
- Authentication events for firmware-capable accounts from atypical source addresses.
Detection Strategies
- Monitor OT network segments for firmware transfer traffic and compare against approved maintenance schedules.
- Alert on writes to firmware update endpoints by accounts not enrolled in the change process.
- Correlate device availability drops with preceding update-related protocol activity.
Monitoring Recommendations
- Ingest device logs, syslog, and OT protocol telemetry into a centralized analytics platform for cross-source correlation.
- Track firmware version inventories continuously and flag drift from the approved baseline.
- Review authentication logs for firmware-capable accounts and enforce alerting on privilege use.
How to Mitigate CVE-2025-1058
Immediate Actions Required
- Apply the remediation guidance published in the Schneider Electric Security Notice SEVD-2025-042-01.
- Restrict network access to firmware update interfaces to a dedicated management VLAN.
- Rotate credentials for accounts authorized to perform firmware operations.
- Inventory affected devices and verify current firmware versions against the vendor baseline.
Patch Information
Refer to the Schneider Electric Security Notice SEVD-2025-042-01 for affected product versions, fixed releases, and vendor-recommended remediation steps.
Workarounds
- Place affected devices behind firewalls that permit firmware update traffic only from designated engineering workstations.
- Disable remote firmware update functionality where operationally feasible and require on-site updates.
- Enforce multi-factor or certificate-based authentication for accounts with firmware privileges.
- Continuously monitor device health and firmware version state to detect unauthorized changes quickly.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
