CVE & CISA-KEV Catalog

CVE-2021-22708

HIGH

7.2

CVSS v3

Description

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.

How to fix

Remediation Available

evlink city evc1s22p4 firmwareNVD

Affected:< r8_v3.4.0.1Fixed in:r8_v3.4.0.1CVE-2021-22708derived from NVD

evlink city evc1s7p4 firmwareNVD

Affected:< r8_v3.4.0.1Fixed in:r8_v3.4.0.1CVE-2021-22708derived from NVD

evlink parking ev.2 firmwareNVD

Affected:< r8_v3.4.0.1Fixed in:r8_v3.4.0.1CVE-2021-22708derived from NVD

evlink parking evf2 firmwareNVD

Affected:< r8_v3.4.0.1Fixed in:r8_v3.4.0.1CVE-2021-22708derived from NVD

evlink parking evw2 firmwareNVD

Affected:< r8_v3.4.0.1Fixed in:r8_v3.4.0.1CVE-2021-22708derived from NVD

evlink smart wallbox evb1a firmwareNVD

Affected:< r8_v3.4.0.1Fixed in:r8_v3.4.0.1CVE-2021-22708derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.65%probability of exploitation in 30 days

47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Vendor Advisory1

download.schneider-electric.com

Related Vulnerabilities

Other CWE-347 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-16042	Medium	6.5	82%	-	-
CVE-2025-59718	Critical	9.8	66%	KEV	Fix
CVE-2025-25292	Critical	9.8	64%	-	Fix
CVE-2021-22160	Critical	9.8	53%	-	Fix
CVE-2013-3900	Medium	5.5	45%	KEV	-
CVE-2018-0114	High	7.5	43%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.