CVE-2021-22708: Schneider Electric Evlink City EVC1S22P4 Firmware

High severity, CVSS 7.2. EPSS: 0.7% chance of exploitation in the next 30 days.

A CWE-347: Improper Verification of Cryptographic Signature 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 allow an attacker to craft a malicious firmware package and bypass the signature verification mechanism.

Affected products

• Schneider Electric Evlink City EVC1S22P4 Firmware: before r8_v3.4.0.1 (fixed in r8_v3.4.0.1)
• Schneider Electric Evlink City EVC1S7P4 Firmware: before r8_v3.4.0.1 (fixed in r8_v3.4.0.1)
• Schneider Electric Evlink Parking ev.2 Firmware: before r8_v3.4.0.1 (fixed in r8_v3.4.0.1)
• Schneider Electric Evlink Parking EVF2 Firmware: before r8_v3.4.0.1 (fixed in r8_v3.4.0.1)
• Schneider Electric Evlink Parking EVW2 Firmware: before r8_v3.4.0.1 (fixed in r8_v3.4.0.1)
• Schneider Electric Evlink Smart Wallbox EVB1A Firmware: before r8_v3.4.0.1 (fixed in r8_v3.4.0.1)

Published 2021-07-21. Last modified 2026-06-17.