CVE intelligence and bounded remediation

CVE-2021-22774 — Schneider-Electric Evlink City Evc1S22P4 Firmware security vulnerability

High CVSS 7.5

A CWE-759: Use of a One-Way Hash without a Salt vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could lead an attacker to get knowledge of charging station user account credentials using dictionary attacks techniques.

Severity
High
CVSS
7.5 (3.1)
Published
2021-07-21
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-916

Affected products

  • schneider-electric / evlink_city_evc1s22p4_firmware
  • schneider-electric / evlink_city_evc1s7p4_firmware
  • schneider-electric / evlink_parking_evw2_firmware
  • schneider-electric / evlink_parking_evf2_firmware
  • schneider-electric / evlink_parking_ev.2_firmware
  • schneider-electric / evlink_smart_wallbox_evb1a_firmware

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.