CVE-2021-22821

Severity: high (CVSS 8.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-01-28 · updated 2026-06-17
Weakness: CWE-918

Description

A CWE-918 Server-Side Request Forgery (SSRF) vulnerability exists that could cause the station web server to forward requests to unintended network targets when crafted malicious parameters are submitted to the charging station web server. Affected Products: EVlink City EVC1S22P4 / EVC1S7P4 (All versions prior to R8 V3.4.0.2 ), EVlink Parking EVW2 / EVF2 / EVP2PE (All versions prior to R8 V3.4.0.2), and EVlink Smart Wallbox EVB1A (All versions prior to R8 V3.4.0.2)

Affected products

Schneider-Electric Evlink City Evc1S22P4 Firmware: before 3.4.0.2 — fixed in 3.4.0.2
Schneider-Electric Evlink City Evc1S7P4 Firmware: before 3.4.0.2 — fixed in 3.4.0.2
Schneider-Electric Evlink Parking Evf2 Firmware: before 3.4.0.2 — fixed in 3.4.0.2
Schneider-Electric Evlink Parking Evp2Pe Firmware: before 3.4.0.2 — fixed in 3.4.0.2
Schneider-Electric Evlink Parking Evw2 Firmware: before 3.4.0.2 — fixed in 3.4.0.2
Schneider-Electric Evlink Smart Wallbox Evb1A Firmware: before 3.4.0.2 — fixed in 3.4.0.2

How to fix

Upgrade to a fixed version: Schneider-Electric Evlink City Evc1S22P4 Firmware 3.4.0.2; Schneider-Electric Evlink City Evc1S7P4 Firmware 3.4.0.2; Schneider-Electric Evlink Parking Evf2 Firmware 3.4.0.2; Schneider-Electric Evlink Parking Evp2Pe Firmware 3.4.0.2; Schneider-Electric Evlink Parking Evw2 Firmware 3.4.0.2; Schneider-Electric Evlink Smart Wallbox Evb1A Firmware 3.4.0.2. Check the vendor advisory for mitigations.

References

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